Permit Required? Required
Typical Fee Range $150–$600 Residential rate is $10 per $1,000 of construction value; minimum fees apply.
Fee Method Valuation-based
Apply Online Apply at Inspectional Services Department →

What's Required in Boston

  • Structural drawings stamped by a MA Registered Professional Engineer.
  • Certified plot plan showing the deck's distance from property lines.
  • Footings must be at least 48 inches deep (frost line).
  • Railing height must be at least 36 inches for residential decks.
  • Stair treads must be at least 10 inches deep with 7.75-inch max rise.
  • Verification of joist hanger and ledger board fastening details.

How to Get a Deck Permit in Boston

1

Step 1: Design Review

Consult with an engineer to ensure the deck meets MA State Building Code.

2

Step 2: Zoning Clinic

Optional: Visit ISD to confirm your deck footprint doesn't violate lot coverage rules.

3

Step 3: Submit Long Form

Decks are considered structural and require a 'Long Form' permit application.

4

Step 4: Plan Audit

Building inspectors review structural loads and egress requirements.

5

Step 5: Inspection Chain

Requires inspections for footings, framing (before decking), and final completion.

Frequently Asked Questions

No, Boston zoning requires specific side and rear yard setbacks based on your district.
Yes, any raised wood structure attached to a dwelling requires a permit in Boston.
You may act as your own contractor for a 1-3 unit home, but you assume all liability for code compliance.