Building Permits in Cambridge, MA

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

54 Permit Rules

15 Project Types

$65 – $6,500 Permit Fee Range

IRC 2015 Building Code

Key Exemptions in Cambridge

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

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

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

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

Fences 6 feet or under do not require a building permit in Cambridge, MA.

Small detached garage/carport structures (120 sq ft or less) may be treated as exempt accessory structures in Cambridge, MA.

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

4 rules

3 rules

3 rules

3 rules

3 rules

4 rules

4 rules

Swimming Pool / Hot Tub

3 rules

4 rules

4 rules

4 rules

5 rules

3 rules

4 rules

3 rules

Get a personalized answer

Our lookup tool asks a few questions about your specific project to give you the most accurate answer.

Check Your Project →

Cambridge Building Department

NameInspectional Services Department

Phone(617) 349-6100

WebsiteVisit website

Address831 Massachusetts Ave, Cambridge, MA 02139

HoursMon-Fri 8:30am-5pm

Nearby Cities in Massachusetts

Boston Worcester Springfield Lowell Quincy Newton Somerville Chicopee

Permit Guides

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

Deck Guide Fence Guide Shed Guide Roof Guide Bathroom Guide Kitchen Guide Pool Guide Electrical Guide Plumbing Guide HVAC Guide Garage Guide Addition Guide Basement Guide

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