Access 48,413 building permits issued in Marin County, California through a single REST API, normalized into a consistent schema. Data through October 4, 2026.
Most common permit types issued in the last year.
Drill into the most common permit categories in Marin County.
The most active contractors by permit volume in Marin County, with a profile of each one's permit history. Counts are permits we hold for Marin County.
Every permit we hold for one Marin County address (roof, HVAC, solar, additions, with dates and contractors) in a single call to /v1/property/history. Used by lenders for collateral review, insurers for roof and system age, and real estate teams for due diligence.
The 10 most recent permits issued in Marin County, California. Full dataset available via REST API.
| Issued | Permit # | Address | Category | Description |
|---|---|---|---|---|
| 2026-10-01 | 182646 | 332 DOLAN AVE, MILL VALLEY, CA 94941 | Other | Structural Deck Underpinning Concrete Piers. New Reinforced Concrete Grade Beams A... |
| 2026-10-01 | 182647 | 71 SCHMIDT LN, SAN RAFAEL, CA 94903 | Other | New Gas Fireplace Insert, No Changes To Walls Or Framing. |
| 2026-09-30 | 182643 | 42 MAIN ST, SAN QUENTIN, CA 94964 | Fence | Water Damage Repair Limited To Lower Level. Like-For-Like Restoration. Construct (... |
| 2026-09-30 | 181908 | 267 E STRAWBERRY DR, MILL VALLEY, CA 94941 | Other | New Storage Room Under Flex Room - Related To 180025 |
| 2026-09-30 | 182619 | 847 SIR FRANCIS DRAKE BLVD, KENTFIELD, CA 94904 | Other | Attached A D U; Convert Unfinished Lower Level To Living Space; Convert Part Of Up... |
| 2026-09-30 | 182642 | 1000 IRON SPRINGS RD, FAIRFAX, CA 94930 | Renovation | Upgrades To (E) Cell Tower - T Mobile |
| 2026-09-30 | 182535 | 2535 OPALSTONE TER ( A D U 2535 A), SAN RAFAEL, CA | Other | New Detached A D U With Deck |
| 2026-09-25 | 182620 | 2402 SIR FRANCIS DRAKE BLVD, FAIRFAX, CA 94930 | Electrical | Install Low Voltage Bulk Co2 Montoring System. Plug And Play System, No Mechanical... |
| 2026-09-24 | 182617 | 409 MONTFORD AVE (ADU 409A), MILL VALLEY, CA 94941 | Addition | Conversion Of (E) Space Into J A D U, Along With An A D U Addition Within The (E) ... |
| 2026-09-24 | 182614 | 30 LUCKY DR, GREENBRAE, CA 94904 | Addition | aise (E) House Above F B E (N) Entry Porch, Deck & Steps. Interior Remod, Addi... |
Query Marin County, California permits with a single HTTP request. Returns JSON with address, category, status, dates, and full description.
# Search Marin County permits issued in the last 30 days curl -H "X-API-Key: YOUR_KEY" \ "https://api.permit-stack.com/v1/permits/search?city=Marin%20County&state=CA&issued_after=2026-09-06"
The official record sets behind this page, with the date each one's data runs through.
| Record set | Source | Permits | Data through | Note |
|---|---|---|---|---|
| Permits | open data (Socrata) | 48,413 | 2026-10-04 |
Related coverage in California and nationwide.
We ingest Marin County's official permit records directly from Tyler Data & Insights (Socrata) and normalize them into a consistent JSON schema across our U.S. jurisdictions.
The newest permit we hold for Marin County, California is dated October 4, 2026. We re-read this source on a nightly schedule and publish the date the data runs through rather than the date we last polled. Some cities publish permits days after they are filed.
Yes — search Marin County permits free in the browser, no signup needed. The API needs a free key (100 requests per day, no credit card).
Yes. CSV export is available on every plan, including free, with the row cap rising by tier. Webhooks (Developer plan and up) push new permits after each nightly ingest.
Most Marin County permits are issued on the same day they are filed, reflecting electronic submission and same-day processing for routine permit types. Larger or more complex projects (new construction, major additions) often take longer.
Free tier covers 100 requests per day. No credit card required.
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