Access 152,611 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 |
|---|---|---|---|---|
| 2026-08-06 | MEP-2026-304058 | 817 RAND ST | Electrical | Electrical existing100 amp MSP upgraded to 200 amp MSP overhead no added load |
| 2026-08-06 | BD-2026-304055 | 3421 EDISON ST | Roofing | Re-Roof Administration Bldg. Carport 56A |
| 2026-08-06 | MEP-2026-304061 | 2671 ISABELLE AVE | Electrical | SFD Replace Tankless Instant Water Heater. New unit to be installed in same locati... |
| 2026-08-06 | BD-2026-304059 | 1522 MAXINE AVE | Interior remodel | **PENDING PC FEE** ROUTE TO BLDG*** |
| 2026-08-06 | BD-2026-304057 | 1309 BIRCH AVE | Roofing | Re-Roof Remove composition roof; install partial sheathing; install composition ro... |
| 2026-08-06 | BD-2026-304056 | 242 36TH AVE | Roofing | Re-Roof Bldg. 46 Carport 46D Units 242A-248E |
| 2026-08-06 | BD-2026-304019 | 229 AMHERST AVE | Solar | Installation of roof mounted PV, 18 modules at 7.83 kWh. Installation of 2 ESS Bat... |
| 2026-08-06 | BD-2026-304062 | 49 36TH AVE | Roofing | TPO Overlay of 106sq- Clean and prep roof to mechanically fastened Johns Manville ... |
| 2026-08-06 | MEP-2026-304060 | 1 CREEKRIDGE CT | EV charger | ****** INTERNAL NOTES***** |
| 2026-08-06 | BD-2026-304054 | 251 36TH AVE | Roofing | Re-Roof Bldg. 48 Carport 48D Units 251A-256E |
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 August 6, 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. CSV export is available on every plan, including free, with the row cap rising by tier. Real-time webhooks for changed permits are on the Developer plan and above.
The median time from permit filing to issuance in San Mateo, California is 4 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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