Shed Permit in Boston, Massachusetts

Permit required?

Sometimes, depending on the project.

Typical threshold: one-story detached accessory sheds used for tools or storage are exempt if floor area does not exceed 120 sq ft.

When a permit is usually needed

For sheds with a floor area exceeding 120 sq ft

Permit cost and what affects it

Fees are set by the locality and are not published here. See the official fee schedule or contact the office for current amounts.

Permit costs generally depend on the project valuation, the scope of work, and the inspections required. Ask the office how the fee is calculated for your specific project.

Where to apply

• Official permit page
• Permit portal

Frequently asked questions

Do you need a shed permit in Boston?

Under Massachusetts 780 CMR, one-story detached accessory structures used as tool or storage sheds are exempt from the building permit requirement when the floor area is 120 square feet or less. Sheds exceeding 120 square feet require a building permit from Boston ISD. Zoning requirements still apply regardless of size. The typical threshold is one-story detached accessory sheds used for tools or storage are exempt if floor area does not exceed 120 sq ft. Always confirm with the office before starting.

How much does a shed permit cost in Boston?

Fees are set by Boston and are not published here. Contact the office for current amounts.

How long does a shed permit take in Boston?

Processing time for a shed permit in Boston varies by workload and project scope. Contact the Inspectional Services Department for a current estimate.

Where do you apply for a shed permit in Boston?

You can apply through the Boston permit portal or contact the Inspectional Services Department directly. The links are listed on this page.

Official sources

• https://www.boston.gov/departments/inspectional-services
• https://www.boston.gov/boston-permitting