Access 190,107 building permits issued in Seattle, Washington through a single REST API. Refreshed daily from the official Seattle open data portal and normalized into a consistent schema.
Most common permit types issued in the last year.
The 10 most recent permits issued in Seattle, Washington. Full dataset available via REST API.
| Issued | Permit # | Address | Category | Description |
|---|---|---|---|---|
| 2026-05-15 | 7114241-DM | 5603 45TH AVE SW | Demolition | Establish use as vacant land per land use code. Demolish one-family dwelling per... |
| 2026-05-15 | 7125212-CN | 3825 SUNNYSIDE AVE N | Other | Construct substantial alterations and additions to existing one-family dwelling p... |
| 2026-05-15 | 7059927-CN | 810 12TH AVE | Other | Construct non-structural alterations to convert offices to residential units and s... |
| 2026-05-15 | 7102933-CN | 3526 NE 125TH ST | Other | Construct east one-family dwelling (SFR2) per plan. (Establish use as single-fami... |
| 2026-05-15 | 7123939-DM | 11843 31ST PL NE | Demolition | Demolish existing one family dwelling per plan. Includes removal of detached garage. |
| 2026-05-15 | 7143104-CN | 1922 42ND AVE E | Roofing | Replace windows, siding, and roofing on multifamily structure |
| 2026-05-15 | 7124214-CN | 146 NW 137TH ST | Other | Allow new detached accessory dwelling unit to existing single family use per land ... |
| 2026-05-15 | 7005594-CN | 13722 B 39TH AVE NE | Other | Allow detached accessory dwelling unit to existing single-family use per land use ... |
| 2026-05-15 | 7122101-CN | 1231 FEDERAL AVE E | Other | [Establish new detached accessory dwelling unit] Construct new one family dwelling... |
| 2026-05-15 | 7128934-CN | 1510 32ND AVE | Other | Construct alterations to existing one family dwelling per plan. |
Query Seattle, Washington permits with a single HTTP request. Returns JSON with address, category, status, dates, and full description.
# Search all Seattle permits issued this month curl -H "X-API-Key: YOUR_KEY" \ "https://api.permit-stack.com/v1/permits/search?city=Seattle&state=WA&issued_after=2026-04-01"
Related coverage in Washington and nationwide.
We ingest data directly from the official Seattle open data portal (Tyler Data & Insights (Socrata)) 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 Seattle, Washington was issued on May 15, 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 Seattle 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 Seattle, Washington is 50 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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