Building Permits in Somerville, MA

Check permit requirements for home improvement projects in Somerville. Select a project type below to see local requirements, estimated fees, and how to apply.

104 Permit Rules

28 Project Types

$25 – $7,500 Permit Fee Range →

IRC 2015 Building Code

1 Lookups (90 days)

Key Exemptions in Somerville

These projects typically don't require a building permit in Somerville:

Cosmetic bathroom renovations (paint, tile, fixtures in same location) do not require a permit in Somerville, MA.

Small at-grade patio slabs under 120 square feet are typically exempt from building permits per IRC R105.2 (extended via local amendment). The slab must be at-grade (not more than 30 inches above adjacent grade) and not part of an accessible route.

Freestanding decks not exceeding 30 inches above grade do not require a building permit in Somerville, MA.

Replacing an existing driveway in the same footprint with no changes to the curb cut is generally exempt from permit requirements.

Replacing a light fixture or outlet in-kind does not require an electrical permit in Somerville, MA.

See all rules by selecting a project type below, or use our free lookup tool for a personalized answer.

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Get a personalized answer

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Somerville Building Department

NameInspectional Services Department

Phone(617) 625-6600

Emailisd@somervillema.gov

WebsiteVisit website

Address1 Franey Rd, Somerville, MA 02145

HoursMon-Wed 8am-4pm, Thu 8am-7pm, Fri 8am-12pm

Nearby Cities in Massachusetts

Boston Worcester Springfield Cambridge Lowell Brockton Lynn Quincy

Permit Guides

Read our in-depth guides for common home improvement projects:

Deck Guide Fence Guide Shed Guide Roof Guide Window & Door Guide Bathroom Guide Kitchen Guide Pool Guide Electrical Guide Plumbing Guide HVAC Guide Garage Guide Addition Guide Basement Guide Retaining Wall Guide Solar Guide Patio Guide ADU Guide Driveway Guide Demolition Guide EV Charger Guide Generator Guide Gas Line Guide Water Heater Guide Tree Removal Guide Siding Guide Fireplace Guide Concrete Slab Guide

Disclaimer: Always confirm with your local building department before starting your project. PermitMint provides general guidance, not legal advice.