FREE GUIDE · CAMBRIDGE, MA · MIDDLESEX COUNTY
Electrical Permits in Cambridge, Massachusetts
How to pull, inspect, and close an electrical permit in Cambridge — written for licensed electricians and the contractors who hire them.
Where to apply in Cambridge
Electrical permits in Cambridge go through the Inspectional Services Departmentand its wiring inspector. Forms, current fees, and inspection scheduling live on the city's official site: www.cambridgema.gov (search “electrical permit”). The application is the Massachusetts uniform Permit to Do Electrical Work, filed by the licensed electrician performing the work — the GC's building permit doesn't cover the electrical scope.
The process, start to sign-off
- Apply before work starts. Emergency repairs are the recognized exception — accepted practice is filing immediately after making the hazard safe. Confirm how Cambridge's inspector wants emergencies handled.
- Rough inspectionbefore anything is covered: wiring run, boxes set, connections made up, walls still open. The GC can't close in until it passes.
- Final inspection at completion — devices in, fixtures hung, panel labeled. Service upgrades and temporary power typically need inspection approval before the utility connects.
- Sign-off— the passing final recorded by the town. This is what closes the permit; until then it's an open permit regardless of whether the crew finished.
Don't let the permit outlive your attention
Massachusetts permits lapse after extended inactivity — commonly around six months without an inspection, with local practice varying. And a permit that never gets its final stays open in Cambridge's records: open permits hold retainage, stall final payments, and resurface during property sales years later. The cheap fix is scheduling the final the week work completes, and treating any permit approaching ~150 days without activity as an action item.
Cambridge electrical permit FAQ
Who issues electrical permits in Cambridge?
The wiring inspector for Cambridge, through the Inspectional Services Department. Electrical permits are separate from building permits and are pulled by the licensed electrician performing the work.
How do I apply for an electrical permit in Cambridge, MA?
File a Permit to Do Electrical Work with Cambridge's Inspectional Services Department. Check the city's official website for current forms, fees, and whether applications are taken online — and apply before work starts.
What inspections will my Cambridge electrical permit need?
Typically a rough inspection before walls close and a final inspection at completion; service and temporary power work usually needs inspection approval before the utility connects. The final inspection passing is what closes the permit.
How long does an electrical permit last in Cambridge?
Massachusetts permits lapse after extended inactivity — commonly around six months without an inspection, though local practice varies. Confirm specifics with the Cambridge wiring inspector.
Working permits across Cambridge and beyond?
RevnuPros tracks every job's permits through applied → pulled → rough passed → signed off, and warns before a quiet permit goes stale — one list across every town you work in. Also free: the permit expiration calculator and the Massachusetts permitting guide.
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