Massachusetts permits
Do you need a permit in Massachusetts?
Massachusetts enforces the Massachusetts State Building Code (780 CMR) statewide, which is based on the IRC with significant state amendments. The Massachusetts Stretch Energy Code goes well beyond IECC baselines. Construction Supervisor Licenses (CSL) are required for permitted construction work; Home Improvement Contractor (HIC) registration is required for residential remodel contracts. Permits are issued at the municipal level.
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These are statewide ranges. Get your exact Massachusetts cost for your zip code and project size.
Can a homeowner pull the permit?
Yes, in most cases. Owner-occupied 1-2 family residences. Homeowner pulling does not waive CSL requirement on covered work. HIC registration applies to hired contractors, not homeowner self-performing.
Where to file: Town or city building department. Boston uses ISD online. Cambridge, Somerville, Newton all have online portals. Small towns may be in-person with weekly inspector hours. Plan review 1-4 weeks for typical work; 4-8 weeks in Boston.
Permits by trade in Massachusetts
| Trade | When required | Citation | Typical fee | DIY? |
|---|---|---|---|---|
| Plumbing | In-wall work, fixture changes, water heater, gas | 248 CMR; MA Plumbing Code | $100-$400 | No |
| Electrical | New circuits, panel work, service upgrades, EV charger | 527 CMR 12; MA Electrical Code | $100-$400 | No |
| Mechanical (HVAC) | Heat pump install, ductwork, refrigerant | MA Mechanical Code; Stretch Code provisions | $150-$500 | No |
| Building (structural) | Additions, structural modifications, decks | 780 CMR | $200-$1,500 | Yes |
| Roofing | Re-roofs (most jurisdictions), structural deck repair | Local jurisdiction | $75-$300 | Yes |
| HIC registration | Any hired residential remodeling contract | MGL 142A | N/A | Yes |
Hover a Conditional or No entry for the homeowner rule. Always confirm with your local building department, since requirements vary by jurisdiction.
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