Deck / Patio Permit Requirements in Boston, MA
MA uses 10th Edition State Building Code based on 2015 ICC codes. MA does NOT allow homeowner electrical or plumbing work.
When you DON'T need a permit
Freestanding decks not exceeding 30 inches above grade do not require a building permit in Boston, MA.
Source: Massachusetts State Building Code (780 CMR)
When you DO need a permit
Attached decks require a building permit in Boston, MA due to structural connection to the home.
Estimated fee: $120 – $480
Typical timeline: About 2 weeks
Source: Massachusetts State Building Code (780 CMR)
Decks more than 30 inches above grade require a building permit in Boston, MA. Structural plans and guard rails required.
Estimated fee: $180 – $720
Typical timeline: About 3 weeks
Source: Massachusetts State Building Code (780 CMR)
Large covered decks (300+ sq ft) require building and zoning permits in Boston, MA.
Estimated fee: $300 – $960
Typical timeline: About 4 weeks
Source: Massachusetts State Building Code (780 CMR)
Decks may be subject to zoning setback and lot coverage requirements. Check with your local planning department before building near property lines.
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Frequently Asked Questions
Estimated permit fees for Deck / Patio projects in Boston, MA range from $120 – $480. Fees vary based on project scope and valuation.
It depends on the specifics of your project. Some smaller Deck / Patio projects may be exempt from permit requirements, while larger ones typically require a permit. Use our free lookup tool to check your specific situation.
Working without a required permit in Boston can result in fines, stop-work orders, being required to remove completed work, and complications when selling your home. It's always best to check first.
Typical approval time for Deck / Patio permits in Boston is About 2 weeks. More complex projects may take longer if plan review is required.
Learn More About Deck / Patio Permits
Read our complete guide covering permit requirements, costs, common exemptions, and the application process.
Read Deck / Patio Guide →