Do I need a permit
in Cambridge?

Cambridge, MA at a glance

Code adopted

9th MBC

IRC-based

Frost depth

48 in

Statewide

Snow load

30–55 psf

Coastal higher

Review time

3–8 wk

Historic adds time

Run the check for your Cambridge address

60 seconds. Any Cambridge address. Pick your project to start:

Deck Fence Kitchen remodel Bathroom remodel Roof Solar Windows Search all 175 →

Project guides for Cambridge

Each guide covers the specific permit requirements, fees, and filing procedures for this project in Cambridge, MA.

Bathroom remodel in Cambridge

Plumbing moves, new circuits, and fixture work that trigger permits.

Deck in Cambridge

Size and height thresholds, footings, ledger attachment, and guardrail rules.

Electrical work in Cambridge

Panel upgrades, new circuits, service changes, and GFCI/AFCI requirements.

Fence in Cambridge

Height limits, setbacks, pool barrier rules, and HOA overlays.

HVAC in Cambridge

Equipment replacement, refrigerant rules, and new installation permits.

Kitchen remodel in Cambridge

Full remodel combined permits: structural, plumbing, electrical, mechanical.

Roof replacement in Cambridge

Tear-off vs overlay, permitted materials, and wind-zone requirements.

Room addition in Cambridge

Plan review, foundation engineering, framing inspections, and energy code.

Solar panels in Cambridge

Structural roof review, electrical interconnection, and utility approval.

Window replacement in Cambridge

Like-for-like exemptions, egress requirements, and energy code.

Massachusetts context

Cambridge permit rules are shaped by state-level codes and local amendments. See the Massachusetts state guide for code-adoption facts, frost depth, snow load, and other cities we cover in Massachusetts.