Appendix C: Resource Directory

This appendix is organized for fast lookup when you need help, not for leisurely reading. Whether your water heater failed at midnight, you're trying to verify a contractor's license, or you want to know what federal tax credits apply to your new heat pump, you should be able to find the right starting point here within a few minutes.

A note on specificity: contractor licensing, permit requirements, and code adoption all vary by state and often by municipality. This appendix gives you the correct framework and tells you exactly where to look — but the specific requirements for your jurisdiction require one more step: a search for your state or local authority.

C.1 Who to Call for What — System by System

Plumbing

Who does this work: Licensed plumbers handle all work on supply lines, drain-waste-vent systems, water heaters, and fixtures. Some states separate "plumbing contractor" (who can run a business and pull permits) from "journeyman plumber" (who does the hands-on work under supervision). For drain cleaning or simple fixture swaps, some homeowners hire handymen — but any work involving pipe replacement, new fixture installations, or water heater work generally requires a licensed plumber.

License typically required: State plumbing license, sometimes supplemented by a local license or registration. Most states have a master plumber designation required to pull permits. Confirm with your local building department whether the plumber you hire is authorized to obtain permits in your jurisdiction.

How to find one: - Ask neighbors, friends, and real estate agents for referrals — word of mouth remains the most reliable filter. - Your state's contractor licensing board website will have a license lookup tool. Search "[your state] plumbing contractor license lookup." - The American Society of Plumbing Engineers (aspe.org) and the Plumbing-Heating-Cooling Contractors Association (phccweb.org) both have contractor directories.

Before you hire, ask: - Are you licensed in this state and do you have a current license number I can verify? - Are you insured (liability and workers' comp)? - Will you pull the permit for this work? - Can you provide references from similar jobs in the past 12 months? - Do you offer a warranty on labor? For how long?

Electrical

Who does this work: Licensed electricians. Panel upgrades, new circuit installation, wiring replacement, and any work inside the walls requires a licensed electrician. Some states allow homeowners to do electrical work on their own primary residence (with a permit), but most significant work still requires a licensed contractor to pull permits and have work inspected.

License typically required: Electricians are typically licensed at the state level, but many jurisdictions add local licensing requirements on top of state licensing — particularly in large cities. An electrician may need both a state electrical license and a city license to legally work in certain municipalities. Always verify at the local level, not just the state level.

How to find one: - State electrical licensing board (search "[your state] electrical contractor license lookup"). - The National Electrical Contractors Association (necanet.org) has a contractor directory. - For smaller residential work, the Independent Electrical Contractors association (ieci.org) lists members.

Before you hire, ask: - Are you licensed at both the state and local level for my jurisdiction? - Will you pull the permit and schedule inspections? - Do you carry liability insurance and workers' compensation? - What's your process if the inspector finds an issue?

HVAC (Heating, Ventilation, Air Conditioning)

Who does this work: HVAC contractors handle furnaces, air conditioners, heat pumps, boilers, ductwork, and ventilation systems. Technicians who work on refrigerant (the chemical that makes air conditioning possible) must hold an EPA Section 608 certification — this is a federal requirement, not just a state one. Ask for it specifically.

License typically required: HVAC contractor license (varies significantly by state — some states have strong licensing requirements, others are minimal). EPA Section 608 certification for anyone handling refrigerants.

How to find one: - The Air Conditioning Contractors of America (acca.org) maintains a contractor directory and sets quality standards for the industry. - North American Technician Excellence (nate-certs.com) certifies individual technicians — a NATE-certified tech has passed a rigorous competency test. - Your equipment manufacturer's website often has an "authorized dealer" locator for warranty-related service.

Before you hire, ask: - Is your company licensed as an HVAC contractor in this state? - Do your technicians hold EPA 608 certification? - Are any of your technicians NATE-certified? - For new equipment installation: will you perform a Manual J load calculation to size the equipment correctly? - Will you provide a written warranty on both parts and labor?

Roofing

Who does this work: Roofing contractors. This is one of the trades with the most variation in licensing requirements — some states require a specific roofing contractor license, others only require a general contractor license, and a handful have minimal licensing requirements at all. This makes verification especially important.

License typically required: Depends entirely on your state. Some states require a roofing-specific license; others require only a general contractor license. Several states (including Texas, as of this writing) have minimal state-level contractor licensing, placing the burden on local jurisdictions. Check both state and local requirements.

How to find one: - The National Roofing Contractors Association (nrca.net) has a contractor directory and certification programs. - Ask your insurance company — they often have preferred contractors for storm damage claims. - Get at least three bids for any significant roofing project.

Before you hire, ask: - What license do you hold and can I verify it? - Are you a certified installer for the roofing material you're recommending? (Manufacturer certification often affects warranty.) - What does your warranty cover — labor only, materials only, or both? - How do you handle unexpected rot or decking damage found during the job? - Will you provide a certificate of insurance before work begins?

Foundation and Structural

Who does this work: Foundation specialists, structural engineers, and general contractors with structural experience. For diagnosis and engineering opinions (especially for significant cracks, settlement, or structural modifications), a licensed structural engineer (PE) is the appropriate first call — not a repair contractor, who has a financial interest in recommending expensive solutions.

License typically required: Structural engineers must be licensed Professional Engineers (PE) in each state where they practice. Foundation repair contractors typically operate under a general contractor license.

How to find one: - The Structural Engineering Institute (sei.asce.org) has a member directory. - For a second opinion on a repair contractor's recommendation, search "[your state] licensed structural engineer residential." - Ask your home inspector for a referral to a structural engineer if they flagged foundation concerns.

Before you hire, ask (repair contractor): - What is the specific cause of the problem you're recommending I fix? - Can you provide a written engineering justification for the proposed repair method? - What warranty do you offer on the repair, and what does it cover? - Have you done similar work on homes with my foundation type?

Hazardous Materials (Lead, Asbestos, Mold, Radon)

Who does this work: This area has the most specialized licensing requirements because the work involves federally regulated substances.

Lead paint: Any contractor disturbing painted surfaces in homes built before 1978 that are occupied by children under six or pregnant women must be EPA Lead-Safe Certified under the Renovation, Repair, and Painting (RRP) Rule. Verify certification at epa.gov/lead/renovation-repair-and-painting-program-contractors. For full lead abatement (not just disturbance), state-licensed lead abatement contractors are required.

Asbestos: Testing can be done by a certified asbestos inspector; removal (abatement) requires a state-licensed asbestos abatement contractor. Never attempt to remove suspected asbestos yourself. State environmental agencies oversee asbestos contractor licensing — search "[your state] asbestos abatement contractor license."

Mold: Mold remediation contractor licensing varies widely by state. Many states have no specific mold contractor license; others (including Texas, Florida, and New York) have specific licensing requirements. Even in unregulated states, reputable remediators follow the Institute of Inspection, Cleaning and Restoration Certification (IICRC) S520 standard.

Radon mitigation: Radon mitigation contractors should be certified through the National Radon Proficiency Program (nrpp.info) or the National Radon Safety Board (nrsb.org). Some states require state-specific certification in addition to national certification.

General Contracting

Who does this work: General contractors (GCs) manage large projects involving multiple trades — kitchen remodels, additions, whole-house renovations. A GC coordinates subcontractors, manages scheduling, pulls the main permit, and is responsible for the overall project.

License typically required: General contractor license (varies significantly by state). Some states have strong licensing requirements; others are minimal. Always verify at the state and local level.

How to find one: - The National Association of the Remodeling Industry (nari.org) certifies remodelers and has a contractor directory. Look for the Certified Remodeler (CR) designation. - The National Kitchen and Bath Association (nkba.org) certifies kitchen and bath specialists. - The Associated Builders and Contractors (abc.org) lists commercial and residential contractors. - For large projects, ask for references from completed projects of similar scope and visit those completed homes if possible.

Before you hire, ask: - Who are your licensed subcontractors for electrical, plumbing, and HVAC? - Will all subs be properly licensed and insured? - How do you handle project changes and change orders? - What's your payment schedule? - Can I speak with three past clients from projects similar to mine?

Home Inspection

Who does this work: Licensed home inspectors provide pre-purchase or pre-listing visual inspections of a home's major systems. They are generalists who identify items that need further evaluation by specialists — they are not repair contractors.

License typically required: Most states now license home inspectors. The American Society of Home Inspectors (homeinspector.org) and the International Association of Certified Home Inspectors (nachi.org) both have member directories and certification standards.

How to find one: - Your real estate agent will offer referrals, but consider finding your own independently — you want an inspector who works for you, not one who has learned to keep agents happy. - Search ASHI (homeinspector.org) or InterNACHI (nachi.org) member directories. - Ask how many inspections they do per year and whether they carry errors and omissions (E&O) insurance.

C.2 National Hotlines and Emergency Contacts

Gas Emergencies

There is no single national gas emergency number. If you smell gas:

1. Leave the building immediately without operating any switches.
2. Call your local gas utility from outside or from a neighbor's home.
3. If you cannot reach your utility, call 911.

To find your gas utility's emergency line: look on your gas bill, search "[your city/county] natural gas utility emergency," or go to your utility's website. Save this number in your phone now, before you need it.

Carbon Monoxide Poisoning

Poison Control Center: 1-800-222-1222 (24 hours, nationwide)

If anyone is symptomatic (headache, dizziness, nausea, confusion), leave the building immediately and call 911. Poison Control is the right call for guidance once you are safely outside. Carbon monoxide has no smell; if your CO detector alarms, treat it as real.

EPA Lead and Asbestos Information

EPA Safe Drinking Water Hotline: 1-800-426-4791 EPA asbestos and lead information: epa.gov/lead and epa.gov/asbestos Lead-Safe Certified Contractor lookup: cfpub.epa.gov/flpp/ (the EPA's Firm/Contractor lookup tool for RRP certification)

Radon

EPA Radon Hotline (Indoor Air Quality Information Clearinghouse): 1-800-438-4318 EPA radon resources: epa.gov/radon State radon contact directory: epa.gov/radon/find-information-about-local-radon-zones-and-state-contact-information

The EPA recommends mitigating any home with radon levels at or above 4 pCi/L. Test kits are available at hardware stores and online for under $20.

Flood Insurance

National Flood Insurance Program (NFIP): 1-800-427-4661 NFIP website: floodsmart.gov

Flood insurance through the NFIP is separate from homeowners insurance and must be purchased at least 30 days before coverage takes effect. If your home is in a FEMA-designated flood zone, your lender likely requires it.

FEMA Disaster Assistance

FEMA Helpline: 1-800-621-FEMA (1-800-621-3362) Online registration: disasterassistance.gov

After a presidentially declared disaster, homeowners and renters may be eligible for assistance with temporary housing, home repairs not covered by insurance, and other disaster-related needs. Register as soon as the disaster declaration is made — there are deadlines.

Home Repair Scam Reporting

Federal Trade Commission (FTC): reportfraud.ftc.gov or 1-877-382-4357 Your state Attorney General's office: Find yours at naag.org/find-my-ag/ Better Business Bureau: bbb.org/scamtracker

If a contractor takes your deposit and disappears, does inferior work, or uses high-pressure tactics after a disaster, report them. State AG offices often pursue contractor fraud cases that the FTC does not.

C.3 License Lookup Resources

How State Contractor Licensing Works

Contractor licensing in the United States is primarily a state function, not a federal one. This means:

• Requirements vary enormously by state. Some states (California, Florida, Arizona, Nevada) have robust, well-enforced licensing systems with multiple trade-specific licenses. Others have minimal requirements.
• Within a state, some municipalities add local licensing requirements on top of state licensing. New York City, for example, has a separate contractor licensing system from New York State.
• A license in one state does not automatically transfer to another state.

The single most important rule: Always verify a license directly with the issuing authority. Never rely solely on a contractor's word or a card they hand you. License numbers can be fabricated; the state database does not lie.

How to Find Your State's License Lookup Tool

Search: "[your state] contractor license lookup" or "[your state] [trade] license verification"

Most states host their licensing through one of these types of agencies: - Department of Consumer Affairs or Consumer Protection - Department of Labor and Industries - Contractor Licensing Board - Department of Business and Professional Regulation

The Contractors State License Board in California (cslb.ca.gov) is one example of a well-designed state lookup tool — you can search by name, license number, or company name and see license type, status, expiration date, and any disciplinary actions.

Trade Association Membership — What It Means (and Doesn't)

Association membership is a positive signal but not a substitute for license verification. Associations set standards, provide training, and give homeowners some recourse through complaint processes — but membership is voluntary and standards vary.

NARI — National Association of the Remodeling Industry (nari.org) Members must agree to a code of ethics. The Certified Remodeler (CR) designation requires experience, testing, and continuing education. NARI membership is a meaningful credential for renovation work.

NKBA — National Kitchen and Bath Association (nkba.org) Focuses on kitchen and bath design and installation. Certified Kitchen Designer (CKD) and Certified Bath Designer (CBD) designations indicate specialized expertise.

ACCA — Air Conditioning Contractors of America (acca.org) Sets quality standards for HVAC installation and service. Members commit to ACCA's quality installation standards. The ACCA Quality Base Program provides additional verification.

ASA — American Subcontractors Association (asaonline.com) Represents subcontractors across trades, including plumbing. Membership indicates engagement with professional standards.

ABC — Associated Builders and Contractors (abc.org) Large national association for commercial and residential contractors. Merit shop (open to union and non-union). Membership alone is less selective, but ABC's STEP (Safety Training & Evaluation Process) designation indicates attention to safety practices.

NECA — National Electrical Contractors Association (necanet.org) Represents electrical contractors. NECA membership and their certification programs are meaningful signals in the electrical trade.

PHCC — Plumbing-Heating-Cooling Contractors Association (phccweb.org) One of the oldest trade associations in the US. Membership indicates engagement with professional standards in plumbing and HVAC.

C.4 Permit and Code Resources

Why Permits Exist

Building permits exist because home systems can kill people — improperly installed wiring causes fires; incorrectly vented water heaters cause carbon monoxide poisoning; substandard framing collapses. Permits create a record that work was done and inspected to code, which also protects you at resale (unpermitted work can derail a sale or trigger costly retrofits).

Finding Your Local Jurisdiction's Permit Requirements

Permit requirements are set at the local level — city or county. To find yours:

1. Search "[your city or county] building department" or "[your city or county] building permits."
2. Look for the building department's website, which will typically list what types of projects require permits.
3. When in doubt, call the building department and describe the work you're planning — they will tell you whether a permit is required. This call is free.

The International Code Council and Model Codes

The International Code Council (iccsafe.org) publishes the model codes that most US jurisdictions adopt:

• International Residential Code (IRC): Governs single-family and two-family homes.
• International Building Code (IBC): Governs larger structures.
• International Energy Conservation Code (IECC): Governs energy efficiency requirements.
• International Fire Code (IFC): Fire safety requirements.
• International Plumbing Code (IPC) and International Fuel Gas Code (IFGC): Plumbing and gas.

These are model codes — they have no legal force until a jurisdiction formally adopts them. Most jurisdictions adopt the IRC as their base residential code but may adopt different editions and may amend specific sections. To find out what edition and amendments your jurisdiction has adopted, contact your local building department or search "[your state] building code adoption."

When Permits Are Required — General Guidance

Permits are typically required for: - Any structural work (adding, removing, or modifying walls — especially load-bearing walls) - Electrical panel upgrades, new circuits, or rewiring - Plumbing work involving new or relocated pipes or fixtures - HVAC equipment installation or replacement (varies by jurisdiction) - Roofing (in many jurisdictions) - Additions, garages, decks, and accessory structures - Finishing a basement - Converting a garage to living space

Permits are typically not required for: - Like-for-like fixture replacements (replacing a faucet, a toilet, an outlet cover) - Painting, flooring, and purely cosmetic work - Minor repairs that don't alter the structure or systems

This is general guidance only. When in doubt, call your building department before work begins. Doing unpermitted work that requires a permit can result in fines, required demolition, and problems at resale.

Your Building Department

Your building department is a resource, not just an enforcement agency. Building department staff can tell you what permits are required for your project, review plans, and answer code questions. Inspectors who come to check permitted work are there to ensure the work is safe — a passed inspection protects you. Do not be intimidated by the process.

C.5 Utility and Energy Efficiency Programs

DSIRE — The Definitive Starting Point

DSIRE (Database of State Incentives for Renewables and Efficiency): dsireusa.org

DSIRE is maintained by N.C. State University with support from the U.S. Department of Energy and is the most comprehensive source of information on state, local, and utility incentives for energy efficiency and renewable energy in the United States. If you want to know what rebates, tax credits, or financing programs are available in your state for a new heat pump, insulation, windows, solar panels, or any other energy upgrade, start here.

Using DSIRE: enter your state, then filter by technology type (solar, HVAC, insulation, etc.) and incentive type (rebate, tax credit, loan, etc.). Each listing shows the incentive amount, eligibility requirements, and a link to apply.

Federal Tax Credits

Two major federal tax credits apply to residential energy improvements as of this writing. These are subject to change; verify current details at energystar.gov/taxcredits or irs.gov.

Residential Clean Energy Credit (Section 25D) - 30% of the cost of qualifying clean energy equipment - Applies to: solar panels, solar water heaters, small wind turbines, geothermal heat pumps, battery storage systems, and fuel cells - No annual dollar cap (for most technologies) - Applies to the year the system is placed in service - Unused credit carries forward to future tax years

Energy Efficient Home Improvement Credit (Section 25C) - Up to 30% of the cost of qualifying improvements, with annual caps per category - Annual maximum: $1,200 for most improvements; $2,000 for heat pumps and heat pump water heaters - Applies to: insulation, exterior windows and doors, heat pumps, central air conditioners, water heaters, electrical panel upgrades (when required for clean energy equipment), home energy audits - Resets annually — you can claim it each year you make qualifying improvements - Requires Energy Star certification for most equipment

Energy Star

Energy Star: energystar.gov

Energy Star is a joint program of the EPA and the U.S. Department of Energy. Energy Star-certified products meet strict efficiency standards. When shopping for appliances, HVAC equipment, windows, or other home products:

• Energy Star certification is a meaningful baseline — it means the product is in the top tier of efficiency for its category.
• Energy Star's website has product finders, rebate locators (connected to utility programs), and a tax credit center.
• "Most Efficient" Energy Star products are the top performers within the certified category.

PACE Financing — Property Assessed Clean Energy

PACE financing allows homeowners to finance energy efficiency improvements, renewable energy systems, and in some states, water conservation and disaster resilience improvements, through a loan that is repaid through property tax assessments over 5–25 years.

Key features: - No upfront cost; improvements are financed 100% - Repayment is through property taxes — it stays with the property if you sell (though this can complicate a sale) - Available in about 35 states; availability and terms vary significantly - Interest rates are typically higher than home equity loans but do not require home equity qualification

Before using PACE: - Understand that the assessment attaches to the property, not the person — if you sell before the assessment is paid off, the buyer takes on the obligation (or you must pay it off at closing) - Compare PACE rates to alternatives: home equity line of credit (HELOC), personal loan, utility on-bill financing

Search "[your state] PACE financing" to find authorized programs, or visit pacenation.org.

Weatherization Assistance Program (WAP)

U.S. Department of Energy Weatherization Assistance Program: energy.gov/eere/wap

WAP provides free weatherization services to income-eligible households — typically at or below 200% of the federal poverty level. Services include air sealing, insulation, heating and cooling system improvements, and health and safety measures.

• Services are delivered through a network of local agencies (community action agencies, nonprofits, local governments)
• To apply, contact your local community action agency or search "[your state] weatherization assistance program"
• There may be waiting lists in some areas

Utility Rebate Programs

Most electric and gas utilities offer rebate programs for energy-efficient upgrades. Common rebates include:

• HVAC equipment (heat pumps, high-efficiency furnaces, central AC)
• Water heaters (heat pump water heaters, high-efficiency gas)
• Appliances (refrigerators, washing machines, dishwashers)
• Insulation and air sealing
• Smart thermostats
• LED lighting (less common now that LEDs are mainstream)

How to find your utility's rebate programs: 1. Find your utility's website (it's on your bill). 2. Look for "rebates," "energy efficiency," or "customer programs." 3. Cross-reference with DSIRE (dsireusa.org) to make sure you're not missing state-level programs.

Timing matters: some rebates require pre-approval before work begins. Confirm the application process before your project starts.

Home Energy Audits

A professional home energy audit (also called an energy assessment) is a systematic evaluation of your home's energy use, conducted by a certified energy auditor. A thorough audit includes:

• Blower door test (measures how airtight your home is)
• Infrared/thermal imaging (identifies insulation gaps and air leaks)
• Assessment of HVAC equipment efficiency and ductwork leakage
• Review of appliances and lighting
• A prioritized list of recommended improvements with estimated savings and payback periods

What audits cost: Typically $300–$600 for a thorough diagnostic audit. Some utilities offer subsidized or free audits for customers — check before paying full price.

Who performs them: Look for auditors certified by the Building Performance Institute (bpi.org) or RESNET (resnet.us). The energy advisor's certification designation to look for is BPI Building Analyst or HERS Rater.

How to find one: Through your utility's website, DSIRE, or search "BPI certified auditor [your city/state]" at bpi.org/find-a-contractor/.

The audit itself rarely pays for itself directly, but the prioritized improvement list ensures that every dollar you spend on upgrades goes where it will have the most impact.