Chapter 31 — Change Order Management: Identifying, Pricing, Negotiating, and Documenting Changes

The Hook: Thursday, 4:50 p.m.

It is the third Thursday of August, Year 1. Week twenty-four. I am in the trailer with a schedule update open and half a sandwich I am not going to finish, and out on the pad the imaging suite is formed and ready for Monday's slab pour.

Pri Sethi calls Tyler Brandt, our assistant superintendent, on his cell at 4:50 p.m.

I want you to hear this conversation exactly as it happened, because there is no villain in it.

"Tyler — Pri. Bad news from the imaging side. The vendor swapped the MRI. Different manufacturer, bigger magnet. They sent the pad drawing over an hour ago and the pit is deeper. I don't know how much deeper. Maybe eight inches?"

"How much time do I have?"

"None. That's why I'm calling you and not emailing Ray. If you pour Monday to the old drawing you'll be breaking it out in October and I'll be explaining to a board why we're jackhammering a floor we just paid for."

Tyler is looking at the formwork through the trailer window. Two hundred and ten workers are not on this job yet, but eleven of them are Jamal Foster's concrete crew, and they are scheduled Monday at 6:00 a.m.

"So you want me to hold the pour."

"I want you to build it right. Deeper pit, whatever framing it needs, and the shielding contractor says the room grows. Go ahead. I'll get you paper."

"What kind of number are we talking about?"

Pri does the arithmetic in her head the way an owner's rep does at 4:50 on a Thursday. A slab is concrete. Concrete is a hundred and something a yard. Eight more inches over a room-sized pit is — what — forty yards?

"About sixty thousand, I'd guess. Ballpark. Don't hold me to it."

"Understood. We'll make it work."

Both of those people did something defensible. Pri protected her owner from a demolition she could see coming and made a decision in the ninety minutes she had. Tyler protected the schedule and the crew and said yes to the client. Nobody lied. Nobody was reckless. This is not the story of two bad actors. It is the story of two good ones, and that is exactly why it happens on real projects.

Here is what did not happen. Nobody wrote a directive. Nobody sent a confirming email. Nobody opened a separate cost code. Nobody told Wei Chen to run a schedule impact. Nobody handed Jamal a time-and-material ticket book and told him that starting Monday every hour on that pit gets written down, signed, and dated.

Monday at 6:00 a.m. the crew broke out what was already placed, over-excavated the pit, reset forms, and started building it. They worked Monday, Tuesday, Wednesday, and Thursday with no tickets at all. On Friday morning Dani Okonkwo, four months into their first job, asked me a question that cost Meridian Health System a quarter of a million dollars of goodwill and cost Kestrel Construction Group forty-three thousand dollars of hard money:

"Ray — what cost code is the MRI pit going to?"

Eight weeks later, this is where CO #14 landed:

Forty-three thousand six hundred and fifty dollars, gone. Not because Kestrel was wrong. Not because Meridian was unfair. Because of the four days between Monday and Friday when nobody was writing anything down.

This chapter is the autopsy and the antidote. By the end of it you will be able to identify a change the hour it appears, choose the right instrument, price it in five layers instead of one, prove impact instead of asserting it, negotiate it, and log it so that it shows up in your cost report before it shows up as a surprise.

🏃 Fast Track: If you have priced changes before, skim 31.1 and 31.2, then read 31.4 (notice — the model paragraph is worth copying), 31.5.5 (the threshold concept and the measured mile arithmetic), and 31.7 (the change log and pending-change exposure). Do the 📋 Try it in 31.6 with a pencil before you open the answer.

🔬 Deep Dive: This chapter assumes the delay taxonomy and the time impact analysis from Chapter 29, the contemporaneous-record discipline from Chapter 25 and Chapter 26, and the cost-code structure from Chapter 28. What a change becomes when entitlement is genuinely disputed is Chapter 33. The forms are in Appendix D; the clause language to look for is in Appendix G.

31.1 What a Change Actually Is, and Where Changes Come From

A change is a deviation from the contract scope of work. That is the whole definition, and it is more useful than it looks, because it tells you the only question that matters at the moment of discovery: is this inside the four corners of the contract documents, or outside them?

If it is inside, it is not a change. It is work you already sold. Log the clarification, answer the question, and move on.

If it is outside, three things happen simultaneously and you must handle all three: a scope question (what exactly is being added or removed), a money question (what does it cost, and who owes it), and a time question (does it move the schedule, and if so by how much). Most project engineers handle the first two and forget the third. That single omission is worth $5,150 a day on Northgate.

The four sources of change

Every change on any project traces to one of four sources. The source is not trivia — the source determines both your entitlement and the emotional temperature of the negotiation.

Notice what is missing from the list: contractor-caused rework, damage, and means-and-methods failures. Those are not changes. They are your cost. Log them anyway — you cannot manage what you do not count, and a rework code that runs hot is the cheapest early warning you will ever get (Chapter 28).

What Northgate actually generated

Here is Kestrel's Northgate change register, rolled up at final completion and sorted by source. This is what a well-run job with a competent owner and a written change protocol produces — not a disaster, just reality.

Three things in that table are worth your attention.

Forty-one percent of the changes carried zero dollars. Nineteen of the forty-six were clarifications — a dimension confirmed, a conflict resolved, a product approved as equal. If your change log only contains items with money attached, you are running half a log, and you will lose the argument about whether the design was complete.

Sixty-one percent of the money was owner-directed. That is the category with the cleanest entitlement and the hardest budget conversation. Pri Sethi never disputed that Meridian owned CO #14. She disputed the number, because she had a board and a fixed project budget of $61,000,000 and no more.

Thirteen calendar days of extension across 46 changes. On a 565-calendar-day contract, that is nothing. Owners are structurally much more resistant to giving time than to giving money, because time costs them liquidated-damages leverage, occupancy dates, and the interim clinic lease that expires October 1, Year 2. Plan on that asymmetry. It is not personal.

And the headline: $2,094,200 ÷ $47,500,000 = 4.41% of the guaranteed maximum price, on a job everybody involved considers well run.

🔄 Check your understanding. The architect answers an RFI: "Provide per the equipment schedule." The mechanical drawings showed a 3,000 CFM makeup-air unit; the equipment schedule shows 4,200 CFM. The mechanical subcontractor bid the drawing. Is the RFI answer a change, and what is your obligation the day you receive it?

Answer

Yes, it is a change, and it is a design error/omission — two contract documents conflicted, and the answer resolved the conflict in the direction of the more expensive scope. The order of precedence in your contract decides which document governed (Chapter 7), but either way the resolution costs money the mechanical subcontractor did not carry.

Your obligation the day you receive it: log it as a change and give written notice, immediately. An RFI response is one of the three most common places changes hide (the other two are meeting minutes and a marked-up submittal returned "approved as noted"). Curtis Boone let exactly this item sit on Rivermont Elementary. It surfaced eleven weeks later as a $67,000 overrun on cost code 23-00, and by then it was unrecoverable. The change was created on the day of the answer. The claim died on the day nobody logged it.

31.2 The Instruments, and Why the Difference Matters

More money is lost to confusion about which document you are holding than to bad pricing. Here is the family, in the order you will meet them.

Three of these deserve more than a table row.

The change order is a settlement, not an invoice

When you sign a change order you are settling everything about that change — scope, cost, and time. In most standard forms the executed change order is deemed to include all direct, indirect, and impact costs and any time extension arising from that change, and it closes the subject.

That is why the sentence "we'll sign the cost now and deal with time later" is one of the most expensive sentences in construction. If you sign a change order for $75,223 that is silent on time, and you later discover the change pushed you seven days, you may find you already gave those seven days away. Seven days on Northgate is `7 × $5,150 = $36,050` of extended general conditions.

⚖️ What the contract says. Look for the sentence in your changes clause that says an executed change order constitutes full and final compensation for the change, including impact on unchanged work and any adjustment of contract time. It is in most standard general conditions in some form, and it is the reason for reservation of rights language: when you sign a change order for direct cost but the impact is genuinely not yet knowable, you write the reservation into the change order itself — "This change order covers direct cost only. Contractor reserves its right to seek an adjustment of contract time and impact costs arising from this change, subject to the notice provisions of the Contract." Whether such a reservation is honored depends on your contract's language and your jurisdiction. Some owners will refuse to sign it. That refusal is itself information: it tells you they know the impact is coming. Bring the specific wording to your attorney before you rely on it.

The construction change directive exists for a reason, and the reason is good

A CCD is the owner instructing you, unilaterally, to perform changed work before price and time are agreed. New project engineers often read that as bullying. It is the opposite. The CCD exists so that the work is not held hostage to a negotiation.

Consider the alternative. The owner needs a change. You need $186,400 and nine days. The owner thinks it is $60,000 and zero days. Without a CCD the concrete crew stands down until two people in a trailer agree — and everyone pays for the standoff. The CCD breaks the deadlock: you build it, the contract fixes how it will be priced (typically actual cost plus stated markups, or agreed unit prices), and the number gets settled while the work proceeds.

Your obligations under a CCD are specific and non-negotiable:

1. Proceed promptly. Refusing to perform directed work is a breach in most contracts.
2. Keep records the pricing mechanism requires — usually daily time-and-material records with the owner's representative's signature.
3. Give notice of time impact separately, because the CCD almost never grants time.
4. Convert it. A CCD that sits unpriced for four months becomes a claim. Push it to a bilateral change order.

The field order is where free work hides

A field order (or "minor change in the work") is the architect's authority to direct a change that has no cost and no time impact. Used honestly it is a gift: it keeps small clarifications from generating paperwork.

Used carelessly — or optimistically — it becomes an instruction to perform changed work for free. Dale Whitcomb, our project architect, is not a schemer; he is overloaded, and when he writes "minor change" he genuinely believes it is minor. Your job is to check, and to respond in writing the same day if it is not:

"Field Order 22 directs relocation of the imaging control-room door 3'-0" east. The partition is framed, the head-of-wall firestopping is installed and inspected, and the electrical rough-in for the card reader is complete. This is not a no-cost change. We will proceed on your direction and will submit a change order request within five business days. Please confirm."

Two sentences of fact, one sentence of position, one request. You have not refused, you have not been difficult, and you have preserved the money.

📊 Diagram (described): from "something changed" to "money moves"

The flow below is the operational core of this chapter. Read it as a decision tree: every branch is a decision somebody makes in real time, usually in under an hour, usually in the field.

                          SOMETHING CHANGED
                                 |
              Is it a deviation from the contract documents?
                                 |
                +----------------+----------------+
                | NO                              | YES
                v                                 v
        Not a change.                   Identify the SOURCE
        Log the clarification.                    |
        Answer it. Close it.      +---------+-----+-----+----------+
                                  |         |           |          |
                               OWNER     DESIGN     DIFFERING   REGULATORY
                              DIRECTED   ERROR /      SITE       / CODE
                                  |     OMISSION    CONDITION      |
                                  |         |           |          |
                                  +---------+-----+-----+----------+
                                                  |
                                  (Contractor-caused rework exits here:
                                   no entitlement. Log it as your cost.)
                                                  |
                                                  v
                        *** WRITTEN NOTICE. TWO CLOCKS ARE RUNNING. ***
                            cost notice  |  TIME notice (separate!)
                                                  |
                                                  v
                        Do you have WRITTEN authorization to proceed?
                                                  |
                    +-----------------------------+------------------------+
                    | YES                                                  | NO
                    v                                                      v
          CO executed, or CCD issued                    DO NOT START. If the owner
                    |                                   directs you verbally anyway:
                    |                                     1. Confirming letter, same day
                    |                                     2. T&M tickets, signed daily
                    |                                     3. Segregated cost code, hour one
                    |                                     4. Dated photographs
                    |                                                      |
                    +--------------------------+---------------------------+
                                               v
                    PRICE IT IN FIVE LAYERS (31.5)
                    direct cost -> credits -> contract markups
                             -> time (TIA) -> impact (proved)
                                               |
                                               v
                                    Submit COR / CPR, with backup
                                               |
                          +--------------------+--------------------+
                          | AGREED                                  | NOT AGREED
                          v                                         v
                 Bilateral CHANGE ORDER signed.        Negotiate. Escalate. If
                 Contract sum and contract time        entitlement is still disputed:
                 adjusted. Bill it in the next         CLAIM -> Chapter 33
                 pay application (Chapter 32).

Every dollar Kestrel lost on CO #14 was lost at one branch of that tree: the "NO" under do you have written authorization, followed by none of the four numbered steps underneath it.

31.3 The One Rule, and What To Do When the One Rule Meets Thursday

No work without written authorization.

That is the rule. It is simple, it is correct, and every experienced project manager reading this knows the other half of the truth: there are days when it is not a real option.

Pri Sethi called at 4:50 on a Thursday with a pour scheduled Monday. The purist answer is "we hold the pour until we have a written directive." Play that forward. You stop eleven craftworkers who have nowhere else to go on Monday. You break the pour sequence. You tell your client — a client who just made a fast, correct decision to protect her own budget — that her word is not good enough. And you do all of it over a weekend when the person who signs directives at Meridian is not at a desk.

Sometimes you should hold. If the change is enormous, if entitlement is genuinely unclear, or if the person directing you may not have authority, hold and escalate. But on the ordinary Thursday, with a client you trust and a decision that is obviously right, you are going to proceed. So the question is not "how do I avoid ever proceeding without paper?" The question is: when I proceed without paper, what do I do in the next ninety minutes so that I am protected anyway?

Three things. Each of them is cheap. Together they were worth about $65,400 on CO #14.

1. The confirming letter — send it the same day

A confirming letter is a written record of a verbal instruction, sent by you, to the person who gave it, on the day it was given. It does not ask permission. It does not argue. It states what you were told and what you are doing about it. Silence in response is far better for you than silence with no letter, and if the recipient disagrees, you want to know that on Thursday night, not in October.

Here is the one Tyler Brandt did not send. It is four sentences and it would have taken forty seconds (Chapter 26 is where this habit gets built):

Subject: Confirming your direction today — MRI unit substitution, imaging suite depressed slab

Pri — confirming our call at 4:50 p.m. today. You directed Kestrel to stop work on the imaging suite depressed slab as detailed on S-201, and to proceed instead with the deeper pit, added structural framing, expanded RF shielding, and upsized electrical feed required by the substituted MRI unit, per the vendor pad drawing you transmitted at 3:47 p.m.

We are proceeding Monday morning on that direction. This is changed work. We are opening a segregated cost code effective today and will maintain daily time-and-material records for your representative's signature until a price is agreed. We will submit a change order request and a schedule impact analysis; we are not able to confirm cost or time impact at this time and we reserve our rights as to both.

The "about $60,000" figure discussed on our call was an estimate and is not a price. Please confirm if any of the above does not match your understanding.

— Tyler Brandt, Assistant Superintendent, Kestrel Construction Group cc: R. Alvarez, M. Deacon, W. Chen, D. Whitcomb (H+P)

Look at what those four sentences do. They fix the date (the notice clock starts). They fix the scope (four items, named). They fix the source (a vendor drawing, transmitted at a stated time). They fix the authority (Pri directed it). They kill the "$60,000" before it hardens into an expectation. And they put Wei Chen on notice that a schedule impact is coming.

2. Time-and-material tickets, signed daily

A time-and-material (T&M) ticket — sometimes called a force-account ticket or extra-work ticket — is a single-day record of the labor, equipment, and material expended on changed work, presented to the owner's representative that day for signature.

The signature does not mean the owner agrees to pay. Most tickets say so explicitly: signature acknowledges the resources expended, not entitlement or price. That is exactly what you want. You are not asking Pri to agree the change is worth $186,400. You are asking her to acknowledge that eleven people and a pump were on the pit for ten hours on Monday. She will sign that, because it is true, and because she was standing right there.

A ticket that will actually survive a negotiation contains:

Four days of those tickets, signed by Pri as she walked the pad each morning, are the difference between $121,000 and $186,400.

3. The segregated cost code, opened in hour one

This is the one nobody thinks of, and it is the one that saves you even when the tickets slip.

The instant you know work is changed, open a new cost code for it and tell payroll, the field, and accounting to use it. Not "we'll sort it out later from the daily reports." Later, the labor hours are commingled with the base slab-on-grade code, the concrete is on one delivery ticket that covered both pours, and the only way to separate them is a project engineer reconstructing hours from memory eight weeks after the fact.

Reconstruction is not proof. It is an argument, and the other side gets to argue back. Chapter 25 made this its threshold concept and it is worth saying again in dollars: contemporaneous records are worth roughly ten times reconstructed ones, and on CO #14 the exchange rate was worse than that.

💰 Money check: the CO #14 documentation gap, record by record

Kestrel's total cost on CO #14 was $186,400. Here is what that number is actually made of:

Now the gap. $186,400 − $121,000 = $65,400 of cost that Kestrel could not prove. Record by record, here is what was missing and what each missing record was worth:

$19,050 + $25,750 = $65,400. The arithmetic closes exactly, and it tells you something uncomfortable: more than half the documentation gap was time, not work. Kestrel lost $19,050 because it could not prove what it built, and $25,750 because it could not prove what the building cost it in days.

And now the full reconciliation of the $43,650, because the loss is not the same as the gap:

Read the third line twice. Kestrel did earn its full contract markup — 15% on self-perform, 5% on subcontracted work, plus bond and insurance — on every dollar it could substantiate. That markup was $12,741. It was entirely consumed, and then some, by four days of missing tickets and one missing notice letter. CO #14 did not make a small profit. It made no profit and ate $43,650 of hard cost.

⚠️ Safety alert. Look at what Monday morning actually was. A crew arrived at 6:00 a.m. to perform work they had not planned, in a sequence nobody had drawn, on a directive nobody had written. They saw-cut and broke out placed reinforced concrete — silica exposure, respirable dust, flying debris, and hot work near a room that was about to receive RF shielding. They over-excavated a pit to 4'-6" inside a building pad, which is a trench and an excavation with sloping, benching, or shoring requirements that were not on anybody's plan. And they did it under an unspoken instruction to make up the time.

There was no revised job hazard analysis (JHA). The JHA that existed described placing a 5-inch slab on grade. It said nothing about demolition, silica, or excavation.

This is finding #3 from the scaffold near-miss in week 34 wearing different clothes — a crew running behind with an unwritten "make it up" pressure (Chapter 24). Changed work is disproportionately dangerous precisely because it is unplanned, out of sequence, and hurried. Every change order should trigger the same question as every new activity: what is the JHA for this, and who wrote it? Put it in your change procedure as a required step, not a courtesy. On CO #14 we got lucky. Luck is not a control.

🔄 Check your understanding. Your owner's representative refuses to sign a T&M ticket, saying "I'm not agreeing this is a change." What do you do?

Answer

You do not stop writing tickets. You do three things. First, you print on the ticket, and say out loud, that the signature acknowledges resources expended, not entitlement or price — most standard T&M forms carry exactly that disclaimer, and many owner's reps will sign once they understand they are not conceding the argument.

Second, if they still refuse, you note on the ticket "presented to [name] at [time], signature declined", you sign it yourself, and you transmit it to them by email the same day. An unsigned ticket transmitted contemporaneously is dramatically stronger than a signed ticket produced eight weeks later, because the transmittal itself is the contemporaneous record.

Third, you escalate in writing that day — not angrily, factually: "We are performing directed work and are unable to obtain daily verification. Please designate a representative who can verify daily records, or advise how you would like expended resources documented." Now the failure to verify is on the record and it is theirs.

31.4 Notice: The Third Time This Book Has Said It

This is the third time. Chapter 5 taught the mechanics, Chapter 25 taught the record, and now you get it in dollars, because notice is the single most common way a competent project manager loses a valid claim.

Four facts you must internalize:

1. The period is short. Commonly somewhere between 7 and 21 days, and sometimes as short as 48 hours for certain events. It varies by contract and by jurisdiction and it changes over time. Read your clause.
2. The clock starts when you knew or should have known — not when you finished investigating, not when you got a price from your subcontractor, not when it became convenient.
3. Cost and time usually run on different clocks. Northgate's general conditions require written notice of a claim for additional cost within 14 days and additional time within 7 days. Kestrel's cost notice on CO #14 went out at day 14 — just inside. The separate time notice was never sent at all. That, plus the absence of a contemporaneous schedule analysis, is precisely why five of the nine claimed days were denied.
4. The form matters. Notice to the architect when the contract requires notice to the owner may not count. An email when the contract requires certified mail may not count. Meeting minutes drafted by someone else are usually not your notice.

The elements of a notice that works

A model notice paragraph

Adapt the wording to your contract's clause and your jurisdiction. This is a framework, not legal advice — the specific language belongs to your attorney and your contract.

NOTICE OF CHANGE AND RESERVATION OF RIGHTS Project: Northgate Outpatient Pavilion · Contract: CM at Risk, GMP · Ref: Imaging suite depressed slab, MRI unit substitution

Pursuant to the Changes and Claims provisions of the Contract, Kestrel Construction Group hereby gives written notice of a change in the Work.

Event and date. On Thursday, August 17, Year 1, at approximately 4:50 p.m., Meridian Health System's representative directed Kestrel to abandon the imaging suite depressed slab as detailed on Drawing S-201 and to construct instead the deeper pit, added structural framing, expanded RF shielding enclosure, and upsized electrical feed required by the substituted MRI unit identified in the vendor pad drawing transmitted the same afternoon. Kestrel commenced this work on Monday, August 21, Year 1, on that direction.

Position. The directed work is outside the scope of the Contract Documents and constitutes a change for which Kestrel is entitled to an adjustment of the Contract Sum and the Contract Time.

Reservation. The full cost and schedule impacts of this change, including impacts on unchanged work, are not presently determinable. Kestrel reserves its rights to an adjustment of both Contract Sum and Contract Time, and this notice is given without prejudice to any other rights under the Contract.

Records. Kestrel has opened cost code 03-310-CO14 for this work and is maintaining daily time-and-material records available for your representative's verification. A change order request and a schedule impact analysis will follow.

Sixteen lines. Send it the day of the event, and send the time notice on its own clock even if it says the same thing.

🏗️ From the field. I once watched a project manager lose $310,000 because he waited nine days to send notice — while he got a firm price from his subcontractor. His contract's clock was seven days. He sent a perfect, fully priced, beautifully documented notice on day nine and the owner rejected it as untimely, and the board that heard it agreed. Notice is not a price. Notice is a flag. Send the flag on day one with no number in it at all. The number can follow on day thirty.

31.5 Pricing a Change: Five Layers

This is the core skill of the chapter. Most people price layer one and stop. Here is the whole stack, built in order.

   LAYER 5   IMPACT AND DISRUPTION      <- proved, or it is worth nothing
   LAYER 4   TIME AND EXTENDED GC       <- the layer everyone forgets
   LAYER 3   CONTRACT MARKUPS           <- the rate is fixed; the base is not
   LAYER 2   CREDITS FOR DELETED WORK   <- always disputed
   LAYER 1   DIRECT COST                <- everyone gets this far

31.5.1 Layer 1 — Direct cost

Four buckets, and every one of them needs backup.

Two traps live here.

The burdened-rate trap. Kestrel's carpenter composite is $58.40 per man-hour burdened; the concrete crew composite is $54.00. If you price a change at the base wage you have donated the burden — typically 35% to 55% of the wage on top. On 264 man-hours that is real money.

The idle-equipment trap. When a change stops a crew, the excavator does not go home. Idle or standby time is a legitimate cost and it is priced differently from operating time — usually at a substantially lower hourly rate. State which you are claiming, on every line. A reviewer who finds operating rates on idle hours will discount your whole submission, including the parts that were right.

31.5.2 Layer 2 — Credits for deleted work

When scope comes out, money goes back. Two rules and one honest caution.

Rule 1: a credit is the direct cost of the deleted work, plus a reduced markup. Northgate's Division 01 change provision credits deleted work at direct cost plus 10%, against the 15% and 5% allowed on added work. That 5-point differential is not a gift — it is the contract's recognition that some of the contractor's overhead on that scope was already incurred and is not recoverable.

Rule 2: you do not credit what you already built. If the wall is framed and boarded and the owner deletes the room, the framing and board are not a credit. They are a demolition cost. Owners conflate these constantly, in good faith, because from a hundred feet away "the room is gone" looks like it should be cheaper.

The honest caution: credits are almost always disputed, and the reason is structural. When a subcontractor loses scope, it loses the profit on that scope, but it keeps the mobilization, the shop drawings already done, the material already ordered, the crew already staffed, and the supervision already assigned. So the sub's credit is genuinely smaller than the owner expects, and the sub is genuinely not being greedy.

The professional move is to make the offsets visible on the same page rather than netting them quietly. If deleting 320 SF of luxury vinyl tile generates a $2,048 credit and $410 of restocking and surplus material that Sightline Interiors legitimately owns, put both lines on the change order. A credit of $1,638 with no explanation looks like sharp practice. A credit of $2,048 with a $410 add beside it, labeled, looks like arithmetic — and it is.

🧩 Productive struggle. Before you read the next section, take three minutes on this. Pri Sethi slides a change order across the table. It is for a differing site condition — an abandoned water main your crew found at the north dock. The number is $75,223 for the work, and it includes a 7-calendar-day time extension. She says: "I'll sign this today, right now, if the extension is no-cost."

Write down what that offer is worth, in dollars, and whether you take it. Then read on.

31.5.3 Layer 3 — Contract markups

Here is the single most important thing to understand about markup on changes: the contract sets the percentages. The negotiation is almost never about the rate. It is about the base the rate applies to.

Northgate's change-order pricing schedule, from Division 01:

Percentages like these vary widely by contract and jurisdiction — public agencies often publish caps, and some contracts distinguish overhead from profit and cap each separately. Find yours in Division 01 and in the general conditions before you price your first change, not after.

The cascading markup problem. Watch what a second tier does to a number:

$10,000 of work costs the owner $12,850 — a 28.5% load. Every layer is contractually allowed and none of it is padding. But now you understand why owners fight second-tier work, why they sometimes ask you to contract directly with a specialty firm, and why a good project manager flattens the tier structure on changed work when the contract permits it. Explaining this arithmetic to Pri before she sees it is the difference between a negotiation and an accusation.

Bond and insurance. Your payment and performance bond premium is a percentage of the contract value. When the contract value goes up, the premium goes up, and that increase is a real cost of the change. Same for general liability and builder's risk where the policy is rated on contract value. Most contracts allow it as a separate line. Most contractors forget to bill it. On Northgate's $2,094,200 of changes, 1.35% is $28,272 — roughly a project engineer's salary for four months, and it is left on the table more often than not.

🔄 Check your understanding. Your contract allows 15% markup on self-performed change-order work. Your subcontractor submits: "Direct cost $84,000, plus 15% overhead and profit, total $98,824." Is that number right?

Answer

No. $84,000 × 1.15 = $96,600, not $98,824. They computed `$84,000 ÷ 0.85 = $98,824`, which is a 15% margin — a 17.65% markup. It exceeds the contract cap by $2,224 and it will be presented to you, sincerely, as "fifteen percent."

Markup is a percentage of cost. Margin is a percentage of price. They are different numbers describing the same transaction and people use the words interchangeably all day long. Check the arithmetic, not the label — and make sure your subcontracts say which one they mean, because the ones that do not generate this exact conversation on every change order.

31.5.4 Layer 4 — Time, and the money attached to it

Every change gets three questions, and the third one is the one that gets skipped:

1. Does this change add work to an activity on the critical path?
2. Does it add an activity, or change the logic between activities?
3. Does it consume float that belonged to somebody, and whose float was it?

You answer those with a time impact analysis (TIA) — you insert a fragnet (a small fragment of network logic representing the change) into the accepted current schedule update, not the baseline, and you measure the movement of the project completion date (Chapter 29). Run it contemporaneously, while the change is happening. A TIA run eight weeks later against a reconstructed schedule is an argument. A TIA run in week one against the accepted update is evidence.

And then the sentence I want you to tattoo somewhere:

A change order that adds time without addressing extended general conditions has given away $5,150 per day.

Back to the productive struggle. Pri's offer: $75,223 and a 7-day no-cost extension, signed today.

7 CD × $5,150/CD = $36,050.

The offer is not "$75,223." The offer is $75,223 for something worth $111,273 — she is asking you to donate 32% of the change order. She may not even know that; a great many owner's representatives sincerely believe a time extension is a favor they are granting rather than a cost you are absorbing. Your general conditions do not pause. The trailer rent, the superintendent, the project engineer, the temporary power, the cleanup crew, the safety manager, the fence, the dumpsters — all of it runs seven more days at $5,150 a day.

You do not take the deal. What you say is: "I'll sign today too. The seven days are $36,050 of extended general conditions at the rate in our contract, and here's the fragnet showing the seven days. Same page, same signature."

That is not a fight. It is arithmetic, offered pleasantly, with the backup already in your hand.

🔍 Why this works. Time costs money on a construction project for a mechanical reason, not a legal one: general conditions are a rate, not a quantity. Your project staff, your trailer, your temporary facilities, and your site services are budgeted per unit of time, not per unit of work. Northgate's general conditions are $2,900,000 over 565 calendar days — `$2,900,000 ÷ 565 = $5,133/CD`, which the parties rounded and fixed at $5,150/CD in the contract.

That number does not care whether the extra days were productive. It bills whether you build anything or not. Which is why an excusable but non-compensable extension — you get the time, you do not get the money — is only a partial win. It protects you from liquidated damages of $5,500/CD but leaves you paying $5,150/CD out of your own fee. Understanding the difference between those two outcomes is the whole reason Chapter 29 taught you the delay taxonomy before this chapter asked you to price one.

31.5.5 Layer 5 — Impact and disruption

🚪 Threshold concept: the cost of a change is rarely the cost of the work.

Before you cross this threshold, you price a change by measuring what was added: the yards of concrete, the linear feet of wall, the hours to install it. You believe a change order is a small estimate. When somebody claims "impact," you assume they are inflating.

After you cross it, you understand that the added work is often the smallest part of what a change costs. A change lands in the middle of a running production system and disturbs it. Crews stop and restart. Work happens out of sequence, which means it happens without the preceding trade's work in place, which means it happens slower and gets touched twice. Trades stack into the same room. Supervision spreads thinner. A crew that had built the same detail forty times and got fast at it goes back to being slow. And when a job absorbs forty-six changes instead of six, the interaction between them costs more than the sum of them.

A contractor who prices only the visible work has donated the rest. And the mirror image is equally true: an owner who is billed for unsubstantiated "impact" has been overcharged. The discipline is proving it either way — and that discipline, not the belief, is what this section teaches.

The recognized categories of impact:

Now the honesty this section owes you. Impact costs are real, and they are also the most abused line item in construction. There is an entire consulting industry built around producing large impact numbers, and a matching industry built around demolishing them. Owners have learned to reject the word "impact" reflexively, and the reason they have learned that is that they have been handed a lot of impact claims with nothing behind them.

There are exactly two ways to prove impact. Learn both.

Method 1 — the measured mile

You compare productivity in a genuinely unimpacted period against productivity in the impacted period, on the same work, by the same crews, on the same project. It is the most respected disruption methodology in the industry precisely because it uses the project's own data instead of an outside table.

Here is a real one. Sightline Interiors, our interiors subcontractor, claims that 23 separate small changes on levels 2 and 3 over an eleven-week window disrupted its framing and board production.

Step 1 — pick the measured mile. Level 4 clinic area, weeks 44 through 49, before the change flurry. Same crews, same details, same building, no changes in that area during that window.

Step 2 — compute the earned hours at the unimpacted rate.

118,200 SF × 0.0410 MH/SF = 4,848 MH — this is what the impacted work should have cost in hours.

Step 3 — compute the loss.

6,180 MH actual − 4,848 MH earned = 1,332 MH lost.

Step 4 — and this is the step that separates a claim from a con — scrub it. Not every lost hour is the owner's. Kestrel and Sightline sat down with the daily reports and the weather log and took the loss apart:

Step 5 — price it.

910 MH × $62.00/MH (Sightline's burdened composite rate) = $56,420.

Step 6 — sanity-check it, and understand what the check is worth. 910 ÷ 4,848 = 18.8% loss of efficiency. Published industry inefficiency-factor tables — the ones that assign percentage losses to conditions like "moderate change and disruption," "trade stacking," or "excessive overtime" — would typically land a condition like this somewhere in the mid-to-high teens. The two agree within a couple of points.

That agreement is a comfort, not a proof. Say that out loud in the meeting, because it builds the exact credibility you need: "the table says fifteen to twenty percent and our measured mile says eighteen-point-eight; we're using the measured mile because it's your project's own data." Inefficiency tables are negotiating references. They describe conditions in general; they do not measure yours. A claim built only on a table is a claim built on somebody else's job.

🔍 Why this works. The measured mile is credible because it cancels out everything you would otherwise have to argue about. Was the crew any good? Same crew in both periods. Was the estimate realistic? Irrelevant — the baseline is actual performance, not the bid. Was the detail hard? Same detail. Was the sub understaffed? Same company, same weeks.

By using the project's own unimpacted performance as the yardstick, you strip away every variable except the one you are trying to measure. That is also why the selection of the mile is the fight: an owner's consultant will attack your unimpacted period as unrepresentative — too short, too easy, cherry-picked. Choose a mile that is long, ordinary, and defensible, and be prepared to show why you chose it. And notice what Kestrel did with the 190 hours it caused itself. Giving back the piece that is yours is not weakness. It is the single most effective thing you can do to make the other 910 hours believable.

Method 2 — discrete cost tracking

Sometimes you do not need statistics because you can simply count the thing. When a change forces a specific, identifiable, additional event, track that event as its own cost:

• A crew demobilized and remobilized: log the date out, the date back, the crew size, and the setup hours. That is a number, not an inference.
• A section of finished work removed and rebuilt: quantity, labor hours, material.
• Winter protection extended by 21 days because a change pushed the pour: 21 days × the daily heat-and-enclosure cost.
• A second mobilization of a specialty crane: the invoice.

Discrete tracking is stronger than a measured mile whenever it is available, because there is nothing to model. It is just an invoice or a signed ticket. Use it first, and reserve the measured mile for the productivity losses that cannot be counted directly.

The requirement for both methods is identical and it is the theme of this chapter: a cost code, opened before the impact happens. You cannot discretely track a cost you did not segregate, and you cannot measure a mile you did not measure.

31.6 Three Fully Priced Change Orders

Theory ends here. These are three real change orders from Northgate, priced the way you will price them.

CO #036 — a simple owner-directed addition

The change. Meridian's clinic operations group asks for hands-free, low-energy power door operators at six clinic suite doors on levels 2 and 3, for infection-control workflow. Doors and frames are installed; the areas are not yet painted out. Straightforward owner-directed addition.

Why zero days. Wei Chen ran the fragnet anyway — always run it, even when you expect zero — and the work sits in an area of the level-2/3 finishes path carrying 14 calendar days of float. Nine days of added duration consumes float and moves nothing. Kestrel states this affirmatively on the change order: "No adjustment of Contract Time is requested for this change." That sentence buys enormous credibility for the next change order, where you are asking for time.

Executed as submitted, week 66. Not every change is a war.

CO #015 — a differing site condition, with time

The change. Excavating for the north loading-dock retaining wall, the crew hits an abandoned 12-inch cast-iron water main and a concrete thrust block that appear on no survey, no as-built, and no utility locate. Work stops. Notice goes out the same day. Meridian issues a construction change directive two days later so the excavation is not held hostage to pricing.

The time. Wei Chen's fragnet, inserted into the accepted week-27 update, shows the north retaining wall gating the dock slab and the site paving, both on the longest path. Seven calendar days, contemporaneously analyzed, with the notice sent the day of discovery.

Look at the ratio. The extended general conditions are $36,050 ÷ $111,273 = 32.4% of this change order. A project engineer who priced only the work and accepted "seven days, no cost" would have handed back a third of the value — and would have felt good about closing it fast.

How it settled. Meridian executed at $104,100 and granted all seven days. The $7,173 reduction came off the equipment (Meridian's consultant argued four of the six days were partly standby, not operating, and Kestrel's tickets did not distinguish — a lesson that cost $4,880) and off the testing line (which Meridian's own testing agency should have carried under its separate contract). The days were never contested, because the notice was timely and the fragnet was contemporaneous. Compare that to CO #14, four weeks earlier, where the identical owner denied five of nine days.

CO #038 — cumulative impact, with a measured mile

The Sightline Interiors disruption claim priced in 31.5.5, submitted at $69,047.

Where it landed. Meridian's consultant attacked the measured mile on the ground that level 4 is a simpler floor plate than levels 2 and 3 — a fair point, and partly true. After two meetings the parties settled at $38,400, a 55.6% recovery.

Is that a loss? Compare it to the alternative. Kestrel's first instinct had been to submit a cumulative-impact claim built on a published inefficiency table: 20% of the impacted hours, no scrub, no mile. That version would have been $76,000, would have been rejected outright, and would have poisoned the last four months of a relationship Kestrel needed for the closeout punch list. A 55.6% recovery on a rigorous claim beats a 0% recovery on an aggressive one, and it costs you nothing you cannot afford to lose.

📋 Try it: price the level-3 equipment room

Meridian directs the addition of a 320 SF IT and equipment room on level 3, in an area currently framed as one open flex space. Partition framing in the area is complete. Drywall is hung on one face of the wall being rerouted. Overhead MEP rough-in is complete. Ceiling grid is not yet installed.

Scope of the change

• Add 78 LF of new full-height metal-stud partition to the deck (12 ft), acoustic batt insulation, two layers of 5/8" gypsum board one face, one layer the other face, painted
• Demolish 24 LF of existing partition framing and 620 SF of hung board, then re-hang and refinish that 620 SF in its new location
• One 3'-0" × 7'-0" hollow-metal door, frame, and hardware
• Added HVAC: one 6-inch branch duct, one 200 CFM diffuser, one return grille
• Added electrical: two circuits, six receptacles, lighting, data backboard
• Fire protection: two heads relocated, one added
• Delete 320 SF of luxury vinyl tile flooring and 320 SF of acoustical ceiling grid and tile; add 320 SF of sealed concrete floor

Given

Produce: (a) the direct cost of the added work, (b) the credit for deleted work, (c) the contract markups, (d) the time extension and its extended general conditions, and (e) the impact on the two adjacent trades. Then write two or three sentences naming which portions you expect to be challenged and exactly how you would substantiate them.

31.7 Negotiating a Change Order

A negotiation and a claim are different animals. A negotiation is two parties who agree on entitlement arguing about a number. A claim is two parties arguing about whether anything is owed at all (Chapter 33). Ninety percent of your changes should never become claims, and the way to keep them out of that category is preparation and speed.

Preparation checklist

What the owner's representative is actually accountable for

Here is the thing new project managers get wrong most often. They treat the owner's rep as an adversary with a bottomless budget who is being difficult on purpose.

Pri Sethi is a good project manager working under constraints that are just as real as yours. She answers to a hospital operations committee and a board. Meridian's total project budget is $61,000,000 — construction, design fees, FF&E, medical equipment, permits, financing. When changes consume $2,094,200, that money comes out of her owner contingency, and when it runs out she has to go ask a board for more in a public meeting. She has a fiscal year. She has a capital plan. And she has an interim clinic lease that expires October 1, Year 2, which is why time matters more to her than money.

Her constraints shape what is achievable. A settlement that arrives before her board packet closes is worth more to her than one that arrives after. A change she can characterize as "scope the vendor caused" lands differently in her organization than one she has to describe as "cost growth." None of that is manipulation — it is understanding that the person across the table is also solving a problem, and that the shape of the solution matters as much as the size.

Package or itemize?

The practical rule: bundle small, clean, cheap items to reduce administrative friction. Never bundle a contested item with clean ones. A disputed $69,047 impact claim attached to a clean $35,043 door-operator change turns a two-day approval into a two-month approval, and delays your payment on both.

The value of speed

Time destroys change orders. The memories fade, the field crew moves to another job, the owner's rep gets reassigned, the records get boxed, and the number that was obviously right in week 26 becomes debatable in week 40. Kestrel's internal standard on Northgate:

CO #14 took 56 days, and it was the fastest-settling disputed change on the job — because Pri Sethi and Ray Alvarez both wanted it closed. A change order still open at 90 days is not a change order. It is a claim that has not admitted what it is yet.

The CO #14 settlement, in the room

Week 32. Conference room at Meridian's administration building. Pri Sethi, her project accountant, Ray, and Wei Chen with a laptop. Kestrel's COR-14 revision 2 is on the table at $238,207. Meridian's written response three weeks earlier had been $98,600.

PRI: I want to start by saying the thing nobody wants to say. I told Tyler about sixty thousand dollars. I was wrong, I said it out loud, and I own that it set an expectation. But I said "ballpark, don't hold me to it," and I need you to understand I cannot take two hundred and thirty-eight thousand to my board on a number I originated at sixty.

RAY: Understood, and I'm not going to argue the sixty. You were making a fast decision to protect your own budget and you made the right one. If Tyler had held that pour you'd be jackhammering a floor in October.

PRI: So where's the gap?

RAY: Three places. Let's take them in order and I'll tell you where I'm weak before you find it.

Wei Chen turns the laptop around.

RAY: First, the work itself. Sixty-eight thousand one hundred fifty of our own cost, seventy-one thousand nine hundred of subcontract. The subcontract side is clean — executed subcontractor change orders, quotes, invoices, all of it. I'll hand you the file. The self-perform side has a hole. We don't have signed tickets for the first four days.

PRI: How big a hole?

RAY: Nineteen thousand fifty. And I'm not going to pretend I can prove it. I know it's real because I know what my crew did. But I can't hand you a record and neither can you hand one to your board.

PRI: I appreciate you saying that first.

RAY: Second, the time. We claimed nine days. I know I never sent you a separate time notice inside the seven-day window and I know Wei ran the analysis in week 30 instead of week 25.

WEI: Four of the nine days are visible in the accepted week-28 update you approved. I can show you those on the longest path with the update in front of us. The other five I'm reconstructing, and I'll say plainly that a reconstruction is weaker than a contemporaneous analysis.

PRI: Then I'm going to give you the four and not the five. That's not me being tough. That's me being able to defend it.

RAY: Four days is 4 × $5,150 = $20,600 at the rate in the contract. I'll take it.

PRI: And the twenty-two thousand eight hundred of impact?

RAY: I'm withdrawing it. I believe it's real. I have no measured mile and no discrete tracking, so I can't prove it, and if I push a number I can't prove, you'll stop believing the numbers I can.

PRI: (after a pause) All right. Then here's where I am. I'll take your substantiated one hundred twenty-one thousand of cost with the contract markups. That's one thirty-three seven forty-one. Plus four days at fifty-one fifty, twenty thousand six hundred. One fifty-four three forty-one. And then I need to come down, because I have one more argument and you know what it is.

RAY: VE-04.

PRI: VE-04. Kestrel recommended the imaging structural simplification, we accepted it, it saved us two sixty-seven seven, and part of what you demolished exists because of it. I'm not going to say you owe me all of that. I'm going to say we split the demolition.

RAY: Half the demolition, marked up, is five thousand seven sixty-nine.

PRI: And I need a round number that gets this into next week's pay application instead of next month's board packet. One forty-two seven fifty. That's a five-eight-two-two trade from you on top of the demolition split, and in exchange it's signed today and it's in your April draw.

Ray does the arithmetic he had already done that morning: $154,341 − $5,769 − $5,822 = $142,750.

RAY: Done.

Four things in that conversation are worth studying.

Ray named his own weakness before Pri found it. That cost him nothing — she was going to find the missing tickets in ten minutes — and it bought credibility that carried the rest of the discussion.

He withdrew the impact claim rather than defend it badly. Twenty-two thousand eight hundred dollars, gone voluntarily. Every dollar he might have squeezed out of an unprovable claim would have come out of the believability of the $121,000 that was provable.

Wei Chen said "a reconstruction is weaker than a contemporaneous analysis" out loud. Schedulers who oversell get destroyed by the other side's consultant. Schedulers who concede the limits of their own analysis get believed about the rest of it.

And Pri bought speed. The $5,822 was not a haggle. It was the price of getting the item off her board packet and into a pay application, and Ray sold it because $142,750 in April is worth more than $148,572 in July (Chapter 32).

When to escalate

Escalate when: entitlement itself is denied; the owner stops responding; the pending value crosses a threshold your company sets (Kestrel's is $250,000 or 60 days); or the relationship in the room has stopped being productive. Escalation is not aggression — it is moving the conversation to people whose job is to make that decision. On Northgate that is Nadia Haddad and Meridian's vice president of facilities. Do it early, do it politely, and do it in writing.

31.8 The Change Log, and Change Management as a System

One change order is a document. Forty-six change orders is a system, and the system is the change log.

The log

Here is an excerpt from Northgate's change log as of week 71. Every column earns its place.

The two columns people leave off are the two that matter most. The notice date is the one that decides whether you have a claim at all — put it next to the identification date so the gap is visible at a glance. And days claimed versus days granted is the running record of your schedule entitlement; without it you arrive at the end of the job unable to say how much time you asked for and never got.

The aging report

Run it every month with the cost report. Aging is measured from submittal of the COR, not from identification.

An empty 61+ row is what a healthy job looks like. When that row starts filling up, you do not have a pricing problem — you have a decision-making problem on the owner's side, and the fix is a conversation about their approval process, not another revised proposal.

Pending change exposure belongs in the cost report

This is where change management connects to everything else in Part VI. Three separate places where $143,347 has to show up:

1. In the cost report (Chapter 28). If Kestrel has performed $88,000 of that pending work under a CCD, that $88,000 is cost with no matching revenue in the approved contract value. A cost report that does not carry pending-change exposure as a distinct line will show a phantom overrun — and the project manager will spend a week explaining a variance that is not a variance.
2. In the forecast. Cost-to-complete has to include the remaining cost of directed-but-unpriced work.
3. In cash flow (Chapter 32). And this is the rule that surprises people:

💡 Aha moment. Unapproved changes are a cash-flow problem before they are a profit problem. You generally cannot bill for work under an unexecuted change order. So every dollar of directed, performed, unapproved work is a dollar you have already paid your crews and your subcontractors and have not billed anybody for. You are financing your owner's decision-making speed, out of your own working capital, at your own borrowing rate.

Northgate carried an average pending-change balance of roughly $310,000 across the job. At a 9.0% cost of money over 565 calendar days (1.55 years): $310,000 × 9.0% × 1.55 = $43,245. The financing cost of slow change orders on Northgate was almost exactly what CO #14 lost outright — and unlike CO #14, nobody ever wrote it down.

31.9 Changes and Subcontractors

You are in the middle, and the middle is where the exposure lives.

Flow-down

Your subcontracts must require the subcontractor to follow the same change procedure, on the same or shorter clocks, that your prime contract imposes on you. If Meridian gives Kestrel 14 days to give notice of a cost claim, Kestrel's subcontracts must give Sightline 7 or 10 days — because Kestrel needs time to review, price, package, and submit before its own clock expires. A subcontract that mirrors the prime's deadline exactly guarantees that you will be late every time.

Three flow-down provisions to check before you sign a subcontract:

The timing mismatch, and why it is nobody's fault

Sightline performed the work in week 44 and gets paid in week 58 — fourteen weeks. Sightline paid its people every Friday of those fourteen weeks. From where Sightline sits, this looks exactly like the general contractor sitting on their money.

Whether you can lawfully make a subcontractor wait for the owner's payment depends on your subcontract language and on your jurisdiction. Pay-when-paid clauses (which set a reasonable timing expectation) and pay-if-paid clauses (which attempt to make owner payment a condition precedent to any obligation to pay) are treated very differently from state to state, and some jurisdictions restrict or refuse to enforce the latter. Prompt-payment statutes may impose their own deadlines and interest regardless of what your subcontract says. This is a question for your attorney in your state, and the answer changes.

What is not jurisdictional is the management practice:

• Tell the subcontractor the truth about the timeline on the day you direct the work, so week 58 is not a betrayal.
• Do not sit on the sub's proposal. Most of the fourteen weeks above is not the owner's fault. Week 46 to week 47 is yours, and it is the one week you fully control.
• Push for partial or interim approvals on large directed work so the sub can bill something.
• Never use the owner's slowness as cover for holding money you have already been paid. That is the practice that makes good subcontractors stop bidding your work.

🔄 Check your understanding. Your electrical subcontractor performed directed work under a CCD nine weeks ago. The owner has not approved the change. The sub's project manager calls, angry, and says they will stop all work on the project — including base scope — until they are paid. What is your exposure, and what do you do?

Answer

Your exposure is that you are contractually obligated to Meridian for the whole job and Meridian has no obligation to Halcyon at all. If Halcyon stops, Kestrel absorbs the delay, the acceleration, and any liquidated damages — and Kestrel's remedy against Halcyon is a lawsuit, which is slow, expensive, and does not staff the job on Monday.

What you do, in order. First, verify the sub is right — pull the log and check whether the 9 weeks includes a week you sat on their proposal. If it does, say so and fix it. Second, tell them exactly where it is, with the date it went to the owner and the date the owner's response is contractually due. Silence is what turns a delay into a stoppage. Third, escalate to the owner in writing naming the subcontractor's position as a project risk — owners move faster when a pending change becomes a manpower problem. Fourth, consider an interim payment out of your own funds against the substantiated portion, if your cash position allows and your counsel agrees; you are buying a working relationship and continuity of manpower, and it is often the cheapest option on the table. Fifth, remind them in writing that the subcontract requires them to continue performing pending resolution of a dispute — but use that clause last, not first. It is a legal position, not a management solution.

31.10 Preventing Changes — and Why You Cannot Prevent Them All

Almost every technique in this book is, from one angle, a change-prevention technique. Here is the whole arc:

And now the honest caveat, because a chapter that ends "prevent all changes" would be lying to you.

Changes cannot be eliminated, and a project with zero changes is usually a warning sign, not an achievement. Zero changes generally means one of three things: the documents were over-designed and the owner overpaid for certainty it did not need; the owner had no evolving requirements, which on a healthcare or laboratory project is nearly impossible; or — most commonly — the contractor is absorbing scope silently, either because it is afraid to ask or because it is banking the items for a claim at the end.

That third one is the dangerous one, and you will recognize it by its signature: a quiet job with an unhappy field staff and a cost report that gets worse every month for no stated reason.

The goal is not zero changes. The goal is that every change is identified the day it appears, priced honestly, decided quickly, and closed.

31.11 The Ethical Line, in Both Directions

This is a chapter about a technique that can be misused by everybody in the room. So let us name the line on each side, plainly.

The contractor's side

Pricing at what the owner will bear instead of what it costs. A change order is a cost-reimbursement event with a contractually fixed markup, not an auction. When you price a $34,000 change at $52,000 because the owner is desperate and the schedule is tight, you have not negotiated — you have taken advantage of a moment. It is also the least durable money you will ever make, because owners talk to each other and because the same owner will be reviewing your next forty change orders with a consultant.

Inflating impact. Everything in 31.5.5 can be run backwards: pick a flattering measured mile, skip the scrub, apply a table factor to hours that had nothing to do with the change. This is the most common form of change-order abuse in the industry, and it is corrosive because it teaches owners to reject all impact claims — including the honest ones, including yours next year.

Buying the job low to make it up on changes. This is the change-order artist's business model, and on this project it has a name: Curtis Boone. Bid thin, or bid full of exclusions written to become changes, then run an aggressive change program. It is not illegal. It is not even always unprofitable. But it is a strategy of adversarial extraction dressed up as competitiveness, and it produces exactly the behavior you would predict — an owner who fights every item, a design team that stops answering the phone, subcontractors who learn the same game, and a job where nobody trusts anybody. case-study-02.md opens Curtis's Rivermont Elementary change register and does the honest accounting of whether the strategy actually made money. The answer is more interesting than a morality play.

Where the line is: charge what the contract's pricing mechanism produces on cost you actually incurred and can prove. If your number changes when you learn how badly the owner needs it, you have crossed.

The owner's side

Directing work verbally to avoid a paper trail. Some owner's representatives do this deliberately, having learned that a contractor who proceeds without documentation is a contractor who can be squeezed later. Pri Sethi did not do this — she was moving fast on a Thursday — but the pattern exists and you will meet it. The tell is an owner's rep who consistently gives instructions by phone and never confirms them in writing, and who becomes evasive when you send confirming letters.

Refusing reasonable impact costs on principle. An owner whose standing policy is "we never pay impact" is not protecting a budget; they are refusing to consider evidence. That posture guarantees that every disruption issue on their projects becomes a claim, which costs them far more in consultants and legal fees than the honest impact claims would have.

Using payment leverage to force a settlement. Withholding an unrelated progress payment until a contractor accepts a low number on a change is coercion, and depending on your jurisdiction it may run afoul of prompt-payment statutes. It is also the fastest way for an owner to convert a $40,000 disagreement into a $400,000 dispute.

Where the line is: pay what the contract's pricing mechanism produces on cost the contractor can prove, and decide it inside the contractual response period. An owner who slow-walks decisions is making the contractor finance the project, which is a transfer of value nobody agreed to.

🏗️ From the field. The most useful thing I have learned about change orders in twenty-two years is this: your reputation on changes is a priced asset. Pri Sethi settled CO #14 in eight weeks, above what Kestrel could strictly prove, partly because Kestrel had spent twenty-four weeks submitting change orders that turned out to be right. When Ray said "I'm withdrawing the impact claim because I can't prove it," that sentence was underwritten by two dozen previous submissions that had held up under review.

Curtis Boone submitted sixty-one change orders on Rivermont Elementary and by change order eleven the district had hired an outside consultant to review every one of them. The consultant cost the district money. It cost Curtis more.

Spaced Review

Answer these from memory before you read the responses. The recall is the point.

1. From Chapter 29 — the delay taxonomy. A delay can be excusable or inexcusable, and an excusable delay can be compensable or non-compensable, and any delay can be concurrent with another. Which combination did Meridian effectively find on the five denied days of CO #14, and why does that distinction decide whether Kestrel gets money, time, both, or neither?

2. Also from Chapter 29 — the time impact analysis. What does a TIA insert, and into which schedule? Why does the answer to "which schedule" decide whether your analysis is evidence or argument?

3. From Chapter 25 — contemporaneous versus reconstructed records. Say the principle in one sentence, then attach the CO #14 number to it.

4. Deep callback to Chapter 4. What does a guaranteed maximum price guarantee, and what does it not?

Project Checkpoint: Three Priced Change Orders and a Change Log

In Chapter 30 you built an earned value report for the Willow Street Community Center and decided what you would tell the City. Now something changes — three times.

Your project. Willow Street Community Center: $6,800,000, 24,000 SF, City of Rivermont Parks & Recreation, design-bid-build lump sum, 425 calendar days, liquidated damages $1,200/CD, 5% retention, prevailing wage. Your general conditions estimate from Chapter 13 produced a burn rate of $1,600/CD, so your total daily exposure to slipping substantial completion is $2,800/CD — and your extended general conditions rate on an approved extension is $1,600/CD. Source data is in Appendix K; forms are in Appendix D.

Deliverable 1 — three fully priced change orders. Write your own scenarios, one from each source, sized so they are worth pricing:

• An owner-directed change. Parks & Recreation adds a program element — a second serving window and pass-through in the commercial kitchen, or a divider curtain and hoist in the gymnasium.
• A hidden or differing site condition. You have one existing 8-inch water main to relocate. Put something under it that nobody drew.
• A design error or omission. Two documents disagree. Make it a real conflict of the kind you logged in your Chapter 7 discrepancy list.

Each one gets the full five layers: direct cost (labor at burdened prevailing-wage rates, material, equipment, subcontracted work, with quantities and unit costs shown); credits for any deleted work, computed at the contract's credit markup, with any restocking or surplus disclosed as a separate add; contract markups — write your own Division 01 markup schedule for a municipal lump-sum job and state it at the top of each pricing sheet; time, with the days you are requesting, the float you absorbed, and extended general conditions at $1,600/CD; and a substantiated impact component on at least one of the three, using either a measured mile or discrete cost tracking, with the scrub shown — including at least one item you give back because it is yours.

Deliverable 2 — a change log with pending-change exposure. Build the log with all eleven columns from §31.8: number, description, source, date identified, notice date, instrument, proposed value, status, approved value, days claimed, days granted. Populate it with your three changes plus at least seven more (include two zero-dollar clarifications and one credit). Then produce the aging report and state the total pending-change exposure, and write two sentences on how that exposure has to appear in your cost report and your cash-flow forecast.

Deliverable 3 — the notice letter. Write the actual written notice for the differing site condition, using the seven elements in §31.4. Address it correctly, date it the day of discovery, and include the reservation of rights. Then write one sentence identifying the notice clause you are relying on and the number of days it gives you — and note that on a public job, the clock and the delivery method may be set by statute as well as by contract, and that both vary by jurisdiction.

Next chapter you will take these approved change orders into the schedule of values and bill them — which is where you find out that an executed change order and a paid change order are separated by retention, a lien waiver package, and thirty days.

Chapter Summary

The five layers of a change order price. Miss any of them and you have donated the difference.

The decision framework, in order, the hour a change appears:

1. Is it outside the contract documents? If no, log the clarification and close it.
2. What is the source — owner-directed, design error, differing site condition, or regulatory? That determines entitlement.
3. Send written notice. Two clocks: cost and time. Today.
4. Do I have written authorization? If no and I am proceeding anyway: confirming letter, T&M tickets signed daily, segregated cost code opened now, dated photographs.
5. Price the five layers. Request time separately and affirmatively state when you are not requesting it.
6. Log it, age it, and carry the pending exposure into the cost report and the cash-flow forecast.
7. Close it in under 50 days, or escalate.

The four sentences to carry off this chapter:

• The price of a change is set by what you can document, not by what it cost you.
• A change order that adds time without addressing extended general conditions has given away $5,150 per day.
• Unapproved changes are a cash-flow problem before they are a profit problem.
• Give back the piece that is yours. It is the cheapest credibility you will ever buy.

And the arithmetic that should stay with you longest: on CO #14, Kestrel earned $12,741 of contractual markup on everything it could prove, and lost $43,650 on everything it could not — over four days in August when eleven people built exactly the right thing and nobody wrote it down.

What's Next

An executed change order is not money. It is permission to ask for money. Chapter 32 takes CO #14's $142,750 into the schedule of values, through a pay application, past 5% retention and a lien waiver package, and out the other side thirty days later — and shows you why a profitable contractor can still run out of cash. And when entitlement itself is denied rather than negotiated, a change stops being a change: Chapter 33 is where you learn that being right, proving causation, and proving damages are three separate fights, and you have to win all three.