Somerville Building Permit Lookup
Search 90,586 Somerville Inspectional Services Department (ISD) records covering 2014 to 2026. See what was filed, who filed it, and what was never closed out.
Searching in Somerville, Massachusetts · Street address only, no city or state
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Navigating the Somerville permit registry
Building permits in Somerville are public records. Every renovation, addition and structural change that went through the proper process left a filing with Somerville Inspectional Services Department (ISD), and the gaps in that record are often more revealing than the filings themselves.
We pull directly from Somerville Inspectional Services Department (ISD), whose published records begin in 2014 and now run to 90,586 permits. That includes building work alongside the trade permits — electrical, mechanical and plumbing — that carry most of a house's renovation history. You can verify any permit at the source.
Work started without a permit, or started under one that was never closed out, can surface at the worst possible moment: during an appraisal, at closing, or when you make an insurance claim. A permit that shows as open or expired years after the work finished is the signal worth chasing.
Across Somerville's whole record, 49,352 permits closed out properly, 40,906 are still open, and 327 expired without ever being finaled.
Use Cases
Most filed in Somerville
- Building Permit28,525
- Electrical Permit25,250
- Plumbing Permit11,409
- Gas Fitting9,487
- Certificate of Inspection5,332
- Sheet Metal Permit3,101
Source
- Authority
- Somerville Inspectional Services Department (ISD)
- Feed
- Socrata
- Index refreshed
- September 2026
- Typical review
- ~18 days
Somerville Permit Registry FAQ
How far back do the records go?
Somerville's published permit records begin in 2014 and run through 2026. Work done before then will not appear here, even if it was properly permitted at the time.
How many permits are in the database?
90,586 for Somerville, pulled from Somerville Inspectional Services Department (ISD) over Socrata. Our index was last refreshed in September 2026.
Are these records official?
Yes. Every permit shown comes from Somerville Inspectional Services Department (ISD) through its public data feed. We reformat the records, we do not create them.
Can I see which permits are still open?
Yes. Of the 90,586 permits on file, 49,352 closed out properly, 40,906 remain open and 327 expired without ever being finaled. Expired is usually the more serious of the two.
What if I find work without a permit?
Unpermitted work is common and usually negotiable before closing. Get a contractor's estimate for bringing it into compliance, and raise it with the seller while you still have leverage.
Does every minor repair need a permit?
Most cosmetic work does not. Anything structural, electrical or plumbing almost always requires a filing, which is why those are the gaps worth checking.
How current is the data?
We query Somerville Inspectional Services Department (ISD)'s feed directly at search time. How fresh that feed is depends on the department, and some publish on a lag of days. The most recent permit in our Somerville index was issued 2026.
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Searching in Somerville, Massachusetts · Street address only, no city or state
Not sure what you’ll get? See a sample report