Marin County Building Permit Lookup
Search 50,808 Marin County Community Development Agency records covering 2002 to 2026. See what was filed, who filed it, and what was never closed out.
Searching in Marin County, California · Street address only, no city or state
Navigating the Marin County permit registry
Building permits in Marin County are public records. Every renovation, addition and structural change that went through the proper process left a filing with Marin County Community Development Agency, and the gaps in that record are often more revealing than the filings themselves.
We pull directly from Marin County Community Development Agency, whose published records begin in 2002 and now run to 50,808 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.
One limitation worth knowing before you search. Marin County does not publish a status column, so the public record shows what was filed but not whether it was ever closed out. We show the full history and withhold the risk score rather than guessing at one. Why open permits matter.
Use Cases
Most filed in Marin County
- Maintenance21,360
- All other Construction13,824
- Minor Improvement4,010
Source
- Authority
- Marin County Community Development Agency
- Feed
- Socrata
- Index refreshed
- September 2026
- Typical review
- ~20 days
Marin County Permit Registry FAQ
How far back do the records go?
Marin County's published permit records begin in 2002 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?
50,808 for Marin County, pulled from Marin County Community Development Agency over Socrata. Our index was last refreshed in September 2026.
Are these records official?
Yes. Every permit shown comes from Marin County Community Development Agency through its public data feed. We reformat the records, we do not create them.
Why is there no risk score for Marin County?
Marin County does not publish a permit status column, so nobody can tell from the public record whether a permit was ever closed out. We show the full permit history and withhold the score, rather than inventing a number.
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 Marin County Community Development Agency'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 Marin County index was issued 2026.
Ready to check another address?
Searching in Marin County, California · Street address only, no city or state