Solar Permit in Boston, Massachusetts

Permit required?

Yes, a permit is required.

When a permit is usually needed

Before installing any residential solar PV system

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 solar permit in Boston?

Both a building permit and an electrical permit are required for all residential solar panel installations in Boston. Systems under 20 kWh on 1-2 family homes use a short-form permit with a structural engineer's report and homeowner waiver. Systems 20 kWh or larger or on 3 or more family buildings require a long-form permit with architect or engineer-stamped plans. Always confirm with the Inspectional Services Department before starting.

How much does a solar permit cost in Boston?

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

How long does a solar permit take in Boston?

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

Where do you apply for a solar 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/boston-permitting/install-or-replace/install-or-replace-solar-panels
• https://www.boston.gov/departments/inspectional-services