Mass Save · HEAT Loan · Federal Credits · 780 CMR · Stretch Code

The Massachusetts Homeowner Resource Library.

Every Massachusetts program, code, and incentive that affects your home — written for homeowners, not contractors. Mass Save rebates up to $10,000, 0% APR HEAT Loan, federal Inflation Reduction Act credits, 780 CMR building code, Specialized Stretch Code, MA HIC contract protections.

This is the only resource library on the internet that covers every Massachusetts homeowner program, code, and protection in one place — written by a Massachusetts-licensed contractor for the homeowners who actually have to navigate it. Mass Save rebates, the HEAT Loan at 0% APR, federal Inflation Reduction Act credits (25C, 25D, 30D), 780 CMR, the Specialized Stretch Code, MA HIC contract protections under MGL c. 142A, ACCA Manual J, and the AIM Act refrigerant transition. Each guide is paired with the licensed Pro Build service that uses the program.

Financing & Rebates

Massachusetts has the most generous residential energy-rebate landscape in the United States. Here's how every program actually works for the homeowner:

Mass Save Rebates Guide

The complete Mass Save rebate breakdown — heat pump up to $10,000, insulation 75–100% covered, income-eligible enhanced thresholds. How we file the application on your behalf.

0% APR HEAT Loan

The Mass Save HEAT Loan: 0% APR, up to $25,000, 7-year term, paired with rebate-eligible projects. Eligibility, paperwork, and how it stacks with Mass Save rebates and federal credits.

Federal Tax Credits (25C, 25D, 30D)

The Inflation Reduction Act federal credits stack with Mass Save rebates. 25C up to $2,000 for heat pumps, 25D 30% for geothermal/solar, 30D EV credit. Filing form 5695.

Income-Eligible Electrification

Mass Save income-eligible thresholds (60% SMI), $0 out-of-pocket installations, enhanced rebate amounts, and how to document eligibility with one tax return.

Massachusetts Codes & Compliance

Massachusetts code is among the strictest in the country. Misunderstanding one rule can void a manufacturer warranty, fail an inspection, or trigger insurance exclusions. Here's what every Massachusetts homeowner needs to know:

780 CMR Massachusetts Building Code

The Massachusetts state building code (780 CMR) — what permits trigger which trades, residential vs commercial scope, inspection sequence, and homeowner vs contractor responsibilities.

Specialized Stretch Code (14 Cities)

14 Massachusetts municipalities adopted the Specialized Stretch Code with stricter energy and electrification requirements on new construction and major renovations. Full list and what it means for your project.

MA HIC Contract Protection (MGL c. 142A)

Massachusetts Home Improvement Contractor law: 1/3 maximum deposit, milestone payments, 3-day rescission, written contract requirements, MA HIC arbitration program. Every homeowner's legal floor.

Massachusetts Contractor Licensing

Construction Supervisor License, MA HIC, Master Electrician, Master Plumber, Master Gas Fitter, EPA 608, BPI, Mass Save HPC. How to verify each license and avoid unlicensed contractors.

Confused by Massachusetts Codes?

Talk to a Lead Construction Supervisor — free 5-minute consultation, no commitment. We file every permit under our license.

Engineering Standards & Programs

The technical specifications behind real residential work. Misunderstanding these is how homeowners end up with oversized HVAC, voided rebates, and failed inspections.

ACCA Manual J Load Calculation

The ACCA Manual J is the residential HVAC heat-load calculation standard. Most contractors skip it. We run it free on every quote — here's why it matters and how it works.

R-32 / R-454B Refrigerant Transition (AIM Act)

The federal AIM Act phased out R-410A. Mass Save now only rebates heat pumps using R-32 or R-454B. What changed, why, and how to verify your contractor is using compliant refrigerant.

How These Resources Are Organized

Each resource page follows the same pattern: direct answer first, real numbers, named programs, citations, and a link to the licensed Pro Build service that uses the program. No clickbait. No outdated information. Every page is reviewed against current Mass DOER guidance, current 780 CMR amendments, and current Mass Save program year before publication.

If a Massachusetts homeowner program changes — Mass Save rebate caps, Stretch Code adoption, federal tax credit limits — we update the affected resource within the same month. Last update across all guides: April 2026.

Licensing Behind These Resources

Pro Build holds every Massachusetts license referenced in these guides:

  • Massachusetts Construction Supervisor License — required to pull 780 CMR building permits.
  • Massachusetts Home Improvement Contractor (HIC) Registration — required for any contract over $1,000 (MGL c. 142A).
  • Master Electrician (Class A) — required for 527 CMR electrical permits.
  • Master Plumber + Master Gas Fitter — required for 248 CMR plumbing and gas permits.
  • EPA Section 608 Universal — required for refrigerant handling under the AIM Act.
  • EPA RRP Lead-Safe Certified Renovator — required for any work disturbing painted surfaces in pre-1978 homes.
  • Mass Save Heat Pump Contractor (HPC) — required to file Mass Save heat pump rebates.
  • Building Performance Institute (BPI) Certified — required for Mass Save insulation rebates.

Resources FAQs

Massachusetts Resources Questions Answered.

Are these Massachusetts resources up to date?

Yes. Every guide is reviewed against current Mass DOER guidance, current 780 CMR amendments, and the current Mass Save program year. Last full review: April 2026.

Does Pro Build write these resources directly?

Yes. Every guide is written by a Massachusetts-licensed Lead Construction Supervisor who actively works on the program covered. No content farms, no AI ghostwriting, no copy-paste from competitor sites.

Can I use these resources without hiring Pro Build?

Absolutely. The resource library is free, no email gate, no opt-in. We publish it because Massachusetts homeowners deserve clear information — and because well-informed homeowners make better clients when they do hire a contractor.

Do the federal tax credits stack with Mass Save rebates?

Yes. The Mass Save rebate is paid by Massachusetts utility ratepayers (state-level). The federal Inflation Reduction Act credits (25C, 25D, 30D) are claimed on your federal tax return (federal-level). The two stack on the same project.

What is the maximum legal deposit a Massachusetts contractor can take?

1/3 of the total contract value per Massachusetts General Laws c. 142A (the MA HIC law). Anything beyond that is illegal, and you can walk away with full refund. See MA HIC Protection.

Where do I report an unlicensed Massachusetts contractor?

Two routes: (1) Massachusetts Office of Consumer Affairs and Business Regulation (OCABR) for HIC violations, (2) MA Division of Occupational Licensure (DOL) for trade-license violations. Both maintain online complaint forms.

Can I save these resources for offline reference?

Yes. Every resource page is print-friendly, no paywall, and indexable. We encourage homeowners to print or PDF the relevant pages before contractor meetings.

What if a program in these resources changes after I read it?

Each guide carries a "Last reviewed" date at the bottom. If a program (Mass Save, federal credit, Stretch Code) changes after that date, we update inside the same month. If you spot stale information, email {SITE["email"]} and we'll fix it.

Ready to Use These Massachusetts Programs?

5-min reply. Free written estimate within 24 hours. Mass Save HPC. We file every rebate on your behalf.