Access 97,554 building permits issued in San Mateo, California through a single REST API. Refreshed daily from the official San Mateo open data portal and normalized into a consistent schema.
Most common permit types issued in the last year.
Drill into the most common permit categories in San Mateo.
Most active contractors by permit volume in San Mateo.
The 10 most recent permits issued in San Mateo, California. Full dataset available via REST API.
| Issued | Permit # | Address | Category | Description |
|---|---|---|---|---|
| 2026-07-22 | MEP-2026-303792 | 2645 ALAMEDA DE LAS PULGAS | Electrical | Senior Center - Installation of a temporary backup generator. Install transfer sw... |
| 2026-07-22 | BD-2026-303794 | 215 ROSILIE ST | Roofing | T/o existing composition roof; install sheathing; install composition roof (23sq). |
| 2026-07-22 | MAP-2026-000059 | 2338 NORFOLK ST | Other | NEW ADDRESS ASSIGNMENT "2338 S NORFOLK ST, UNIT B" FOR NEW REAR ATTACHED... |
| 2026-07-22 | MEP-2026-303797 | 142 30TH AVE | Electrical | Replace sewer line from house foundation at the front of the house up to the city ... |
| 2026-07-22 | BD-2026-303790 | 323 ELLSWORTH AVE | Renovation | Central City Parking Garage - VOLUNTARY UPGRADES TO ACCESSIBLE PARKING SPACES, ACC... |
| 2026-07-22 | BD-2026-303776 | 377 FRANKLIN ST | Interior remodel | Replace 4 windows. Like for like. No changes or wall alterations. Located in back ... |
| 2026-07-22 | BD-2026-303789 | 1961 PACIFIC BLVD | Electrical | Public Works Corp Yard interior remodel of 1,174sf in existing office area. Build ... |
| 2026-07-22 | PT-2026-000130 | 325 28TH AVE | Other | REMOVAL OF (1) 22-INCH COAST LIVE OAK IN REAR YARD AND 34'-INCH FAN PALM IN FR... |
| 2026-07-22 | BD-2026-303798 | 2429 ELLIOTT ST | Roofing | Overlay re-roof. Existing roof is cap-sheet. No tear off or sheathing. Apply spray... |
| 2026-07-22 | BD-2026-303788 | 322 ELDORADO ST | Solar | Installation of roof mounted PV with microinvertes and an ESS. (13) REC SOLAR mod... |
Query San Mateo, California permits with a single HTTP request. Returns JSON with address, category, status, dates, and full description.
# Search all San Mateo permits issued this month curl -H "X-API-Key: YOUR_KEY" \ "https://api.permit-stack.com/v1/permits/search?city=San%20Mateo&state=CA&issued_after=2026-04-01"
Related coverage in California and nationwide.
We ingest data directly from the official San Mateo open data portal (the official city portal) daily. This is the same source used by the city's own public dashboards, normalized into a consistent JSON schema across our U.S. jurisdictions.
Our automated ingestion runs daily at 03:00 UTC. The latest permit in our database for San Mateo, California was issued on July 22, 2026. Permit backlogs on the city side may mean some permits take a few days to appear.
Yes — our free tier includes 100 requests per day, enough to search and filter San Mateo permits interactively. Sign up for a free API key to get started.
Yes. Paid plans support CSV export and periodic webhooks for changed permits.
The median time from permit filing to issuance in San Mateo, California is 5 days, based on permits issued in the last 12 months. Smaller permit types (residential alteration, electrical) typically issue faster; new construction and large additions usually take longer.
Free tier covers 100 requests per day. No credit card required.
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