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Washington

Building Permits in Seattle, Washington

Access 190,314 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.

190,314
Total permits
8,024
Last 12 months
586
Last 30 days
-11%
vs same period prior year
Jun 18, 2026
Latest permit

Permits by category (last 12 months)

Most common permit types issued in the last year.

Demolition
640
Interior remodel
591
Addition
517
Roofing
442
Renovation
332
Foundation
207
Mechanical
180
Fence
47
Grading
31
Pool
17

Permit data by trade in Seattle

Drill into the most common permit categories in Seattle.

Most recent permits

The 10 most recent permits issued in Seattle, Washington. Full dataset available via REST API.

IssuedPermit #AddressCategoryDescription
2026-06-187101228-CN404 N 105TH STOtherConstruct alterations to existing monopole per plan.
2026-06-187109700-CN4115 ROOSEVELT WAY NERoofingConstruct alterations to minor telecommunications facility (AT&T) at the roof ...
2026-06-187147879-CN233 NW 48TH STOtherConstruct alterations to one family dwelling subject to field inspection STFI.
2026-06-187148679-CN8103 30th AVE SWInterior remodelConstruct interior non-structural alterations to convert lower level office to be...
2026-06-187105690-CN1959 NE PACIFIC STMechanicalConstruct interior alterations to laboratory on level 01 for UW Medical Center pe...
2026-06-187130740-CN1250 HARRISON STInterior remodelConstruct tenant improvements for a fitness gym on first floor of a mixed-use buil...
2026-06-187114992-CN10727 A PALATINE AVE NOtherConstruct new two family dwelling per plan. (Establish use as townhouse per land ...
2026-06-187130001-CN10727 C PALATINE AVE NOtherConstruct new one family dwelling per plan. (Establish use as townhouse per land ...
2026-06-186882351-CN3608 COURTLAND PL SOtherConstruct west 4-unit townhouse building and occupy per plans. (Establish use as...
2026-06-187136519-CN7344 35TH AVE SWOtherConstruct alterations to convert unheated basement to additional classroom facilit...

Access Seattle permit data via API

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"

Other cities we cover

Related coverage in Washington and nationwide.

FAQ

Where does PermitStack get Seattle permit data?

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.

How current is the Seattle data?

Our automated ingestion runs daily at 03:00 UTC. The latest permit in our database for Seattle, Washington was issued on June 18, 2026. Permit backlogs on the city side may mean some permits take a few days to appear.

Can I access Seattle permits without an API key?

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.

Can I export Seattle permit data?

Yes. Paid plans support CSV export and periodic webhooks for changed permits.

How long does a Seattle building permit take to issue?

The median time from permit filing to issuance in Seattle, Washington is 51 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.

Get Seattle permit data in your app today

Free tier covers 100 requests per day. No credit card required.

Get Free API Key