Case Study 1 — The Millbrook Downtown Parking Garage Debate

The Walden County Council, fresh from the rent control debate of March 2025, turned in May to another contentious issue: a proposed $12 million downtown parking garage. The proposal had been on the agenda since 2023, when a study commissioned by the Millbrook Chamber of Commerce found that downtown parking was the single most common complaint from both students and local business owners.

This case study uses the 2×2 matrix and the commons framework from Chapter 12 to analyze the parking debate. It shows that the seemingly simple question "should we build a parking garage?" is actually three questions: (1) Is the garage a worthwhile investment? (2) How should the spaces be allocated? (3) Who should pay?

The current situation

Downtown Millbrook has about 500 metered street parking spaces and 200 spaces in three small private lots. During weekday business hours (10 a.m. to 5 p.m.) and Friday/Saturday evenings, demand exceeds supply. The visible symptoms: drivers circling blocks looking for spaces (an estimated average of 8 minutes of "cruising time" per visit during peak hours), double-parking, illegal parking on residential streets near downtown, and frustrated downtown merchants who report that some customers avoid downtown entirely because of parking difficulty.

Parking meters charge $1.50/hour and are enforced by two city parking enforcement officers. Compliance is moderate — about 30% of metered spaces have expired meters at any given time during enforcement hours. The three private lots charge $5–8 flat rates.

The Chamber of Commerce's study estimated that parking difficulty costs downtown businesses about $2.5 million per year in lost sales (customers who would have come downtown but chose suburban shopping centers instead). This number is imprecise but directionally plausible.

The three economic questions

Question 1 — Is the garage a worthwhile investment?

The proposed garage would have 400 spaces on three levels, built on a city-owned lot near the corner of Main and Walden. Estimated construction cost: $12 million (about $30,000 per space — typical for a Midwestern town). Operating cost: about $600,000/year (maintenance, staffing, utilities). Expected lifespan: 40 years.

Is it worth it?

Cost-benefit analysis: - Costs: $12M construction + $600K/year operating = roughly $24M over 40 years (in present value at a 3% discount rate, about $18M) - Benefits: reduced congestion (estimated value of time saved: ~$1.2M/year), reduced lost sales for downtown businesses ($2.5M/year in the Chamber study, though likely overstated), additional tax revenue from increased downtown economic activity (hard to estimate), and quality-of-life improvement for residents and visitors (hard to quantify) - Rough net present value: benefits probably exceed costs if the demand estimates are correct, but the margin is not huge. The project is defensible but not a slam dunk.

The economic question: does the community value the additional parking at more than $30,000 per space? Given that the average parking space in the U.S. generates roughly $2,000–4,000/year in direct revenue (at typical Midwestern rates), the direct revenue alone doesn't cover the cost. The indirect benefits (congestion reduction, business revenue, quality of life) have to be large enough to tip the balance.

Question 2 — How should the spaces be allocated?

This is where the 2×2 matrix matters. Three options have been proposed:

Option A — Free parking (first-come, first-served).

This makes the garage a common-pool resource. Spaces are rival (one car per space) and non-excludable (anyone can enter). The prediction: the tragedy of the commons. The garage will be full during peak hours. People will circle looking for spaces inside the garage as well as outside. Some drivers will park all day, blocking turnover. The congestion benefit will be smaller than expected because the free price encourages overuse.

Additionally, free parking means no revenue to help cover the $18M present-value cost. The cost falls entirely on taxpayers. Some of those taxpayers don't drive or don't park downtown. They are subsidizing drivers.

The strongest argument for free parking: it is equitable in the sense that everyone has equal access regardless of income. The strongest argument against: it is inefficient, it encourages overuse, and it provides an undifferentiated subsidy to rich and poor drivers alike.

Option B — Metered parking ($2–3/hour, 2-hour maximum during peak hours).

This makes the garage closer to a private good. Spaces are rival and excludable (you pay to park; non-payers are fined). The prediction: efficient allocation. Drivers who value the space most (those willing to pay $2–3/hour) get it. Drivers who don't value it that much park elsewhere or take the bus. Turnover is high (the 2-hour maximum encourages people to leave when they're done, freeing the space for the next driver). Revenue helps cover operating costs and part of construction costs.

The downside: some lower-income residents may feel priced out. If a student or a low-wage worker can't afford $3/hour for parking, the garage doesn't serve them.

Option C — Monthly permits ($75/month for residents, $100/month for non-residents, 200 permits allocated, 200 spaces metered hourly).

This is a hybrid — half club good (permit holders, excludable), half private good (metered hourly spaces). It guarantees regular downtown workers and residents a space while still allowing short-term visitors to park. The downside: permit allocation is administratively complex, and the split between permits and meters has to be calibrated to demand.

Question 3 — Who should pay?

The $12M construction cost has to come from somewhere. Three sources:

1. General tax revenue. All taxpayers pay. This spreads the cost widely but means people who never park downtown are subsidizing those who do.
2. Parking revenue. If metered at $2.50/hour and the garage is 70% occupied during business hours, annual revenue would be roughly $1.5M — enough to cover operating costs and service most of a 30-year bond on the construction cost. The parking pays for itself over time.
3. Special assessment on downtown businesses. The businesses that benefit most from increased foot traffic pay a special assessment. This is sometimes called a "Business Improvement District" model. The assessment is proportional to the benefit.

Most economists would recommend option 2 (parking revenue) supplemented by option 3 (business assessment). This makes the beneficiaries pay — drivers pay through parking fees, businesses pay through the assessment, and taxpayers who don't use the garage don't subsidize it.

What the council decided

The council voted 6–3 to build the garage, financed by a 30-year municipal bond. Parking would be metered at $2/hour during peak hours (10 a.m.–8 p.m.) and free during off-peak hours. No monthly permits. Revenue was projected to cover operating costs and about 80% of the bond payments; the remaining 20% would come from general fund contributions.

The compromise was imperfect. Free parking advocates were unhappy (they wanted fully free parking). Business owners were generally pleased (the Chamber of Commerce had pushed for the garage since 2023). MSU students were divided (some appreciated the additional parking; others wanted the $12M spent on transit or housing instead). Economists on the MSU faculty generally approved the metered design, though several noted that $2/hour was probably below the market-clearing rate and the garage would likely be over-full during peak hours.

The garage is expected to open in 2027.

What the case study illustrates

Lesson 1 — Parking is an economic good, not a right. The debate over free vs. priced parking is fundamentally a debate about whether parking should be treated as a common-pool resource (free, first-come-first-served, prone to overuse) or as a private/club good (priced, excludable, allocated efficiently). Most economists favor pricing.

Lesson 2 — The 2×2 matrix is a practical tool. Classifying a good as rival/non-rival and excludable/non-excludable immediately tells you what economic problems to expect and what solutions to consider.

Lesson 3 — "Free" is not free. Free parking costs money — construction, maintenance, opportunity cost of the land. The cost has to be borne by someone. The question is who.

Lesson 4 — Political decisions reflect values as well as efficiency. The council's choice of $2/hour (below the likely market-clearing rate) was a compromise between efficiency (price higher) and equity (keep it affordable). These compromises are normal in public investment decisions.

Discussion questions

1. Should the Millbrook parking garage charge market-clearing prices during peak hours, or should it be priced below market to keep parking "affordable"? What are the tradeoffs?

2. The Chamber of Commerce estimated that parking difficulty costs downtown businesses $2.5 million per year. How confident should we be in this number? What would it take to verify it?

3. Some MSU students argued the $12M should be spent on transit or housing instead. Apply cost-benefit analysis to compare the parking garage to (a) a new bus route and (b) a housing subsidy program.

4. Apply Ostrom's design principles to downtown parking. Could the business community manage parking itself, without a public garage? What would that look like?

5. What if the garage is built and turns out to be half-empty (demand was overestimated)? What if it's overflowing (demand was underestimated)? How should the city respond in each case?