Building Permits in Washington

We cover 13 cities in Washington. Select a city below to see local permit requirements.

13 Cities Covered

851 Permit Rules

IRC Building Code Base

About Building Permits in Washington

Building permit requirements in Washington are enforced at the local level by city and county building departments. Most jurisdictions adopt the International Residential Code (IRC) as their baseline building standard, though many cities add local amendments that can make requirements stricter or more lenient.

We currently cover 13 cities in Washington with 851 specific permit rules. Permit fees, processing times, and exemption thresholds vary by city — select your city below for details.