Boston Building Permits

Official fees, requirements, and Inspectional Services Department application links for common residential projects in Boston, Massachusetts.

🏛 Inspectional Services Department 📅 Updated April 2026

About Building Permits in Boston

Building permits in Boston are issued by the City of Boston Inspectional Services Department (ISD). Most residential permit applications are submitted online through the Accela portal at boston.gov/departments/inspectional-services. Processing times for standard residential projects typically run 10–20 business days; over-the-counter for minor projects.

9th Edition Massachusetts State Building Code (780 CMR). Boston's density and historic building stock mean many projects require a Special Permit from the Board of Zoning Appeal for additions or accessory structures.

Inspections are scheduled through the Boston ISD portal; most residential inspections occur within 2–3 business days.

Project Types in Boston

Select a project to see permit requirements, fees, and how to apply.

Deck Permit$150–$600 -- Required Fence Permit$50–$150 -- Sometimes Required Shed Permit$50–$150 -- Required Pool Permit$100–$500 -- Required Roof Replacement Permit$50–$250 -- Sometimes Required Kitchen Remodel Permit$250–$1,500 -- Required Bathroom Remodel Permit$150–$800 -- Required ADU Permit$10,000–$22,000 -- Required Electrical Panel Permit$70–$250 -- Required HVAC Permit$100–$400 -- Required