Plumbing Permit in Boston, Massachusetts

Permit required?

Yes, a permit is required.

When a permit is usually needed

For residential plumbing installations or alterations involving water lines or fixtures

Permit cost and what affects it

$20 application fee plus $5 per fixture such as toilets and sinks

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 plumbing permit in Boston?

A plumbing permit is required from Boston ISD for work on water lines and plumbing installations including sinks, bathtubs, and bathroom fixtures. Only licensed contractors may apply. Fees are $20 application fee plus $5 per fixture. Work cannot begin before permit issuance. Always confirm with the Inspectional Services Department before starting.

How much does a plumbing permit cost in Boston?

$20 application fee plus $5 per fixture such as toilets and sinks Contact the office for current amounts.

How long does a plumbing permit take in Boston?

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

Where do you apply for a plumbing 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/permits/plumbing-permits
• https://www.boston.gov/departments/inspectional-services