Building Permits in Massachusetts

We cover 28 cities in Massachusetts. Select a city below to see local permit requirements.

28 Cities Covered

2,798 Permit Rules

IRC Building Code Base

Building Codes in Massachusetts

Building permit requirements in Massachusetts are enforced at the local level, each city and county building department sets its own rules, fees, and timelines. Most cities in Massachusetts follow the 2021 IRC, though 10 cities are still on the 2015 edition.

We cover 28 cities in Massachusetts with 2,798 specific permit rules. That's real, locally researched data, not generic advice. Each city page shows exactly what triggers a permit, what's exempt, estimated fees, and how to apply.

The bottom line: don't assume your city follows the same rules as the one next door. A fence that's exempt in one town might need a full permit two miles away. Always check your specific city.

Permit Fees Across Massachusetts

Across the 28 cities we cover in Massachusetts, permit fees range from $25 – $7,500. The average sits around $214 – $904.

Fees vary a lot by city and project type. A simple fence permit might run you $50, while a full room addition could be $2,000+. Most cities calculate fees based on your estimated project value, typically 1–2% of construction cost. Check the specific city page for accurate numbers.

Common Permit Exemptions in Massachusetts

These are the most common projects that don't require a permit across cities in Massachusetts. Keep in mind, "exempt from a permit" doesn't mean "exempt from code." You still have to build to code even without a permit.

Fence: Exempt in 49 of our 28 covered cities

Windows and Doors: Exempt in 42 of our 28 covered cities

Tree Removal: Exempt in 28 of our 28 covered cities

Siding: Exempt in 28 of our 28 covered cities

Shed: Exempt in 28 of our 28 covered cities

Exemptions vary by city. Always verify with your local building department before starting work.

Contractor Licensing in Massachusetts

If you're hiring a contractor in Massachusetts, make sure they're properly licensed. You can verify credentials through the Massachusetts CSL – Construction Supervisor.

Two rules of thumb: never pay a contractor in full upfront, a third down is standard. And if a contractor tells you "we don't need a permit for this," that's a red flag. Use PermitMint to verify before you sign anything.