HVAC Permit in Boston, Massachusetts

Permit required?

Yes, a permit is required.

When a permit is usually needed

For residential HVAC installation or major replacement

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 hvac permit in Boston?

A mechanical permit is required from Boston ISD for residential HVAC installations and major replacements including furnaces, boilers, heat pumps, ductless splits, compressors, and air handlers. Minor repairs generally do not require a permit. Applications are filed through the ISD online permitting portal. Always confirm with the Inspectional Services Department before starting.

How much does a hvac permit cost in Boston?

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

How long does a hvac permit take in Boston?

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

Where do you apply for a hvac 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