Washington County building permits & inspections
Find the office responsible for building permits, plan review, inspections, and zoning in Washington County, Colorado.
We haven’t researched an office in Washington County yet
Check whether your address is inside a city or town first; if it is unincorporated, the county government can tell you which office reviews building permits. These Colorado offices have full department guides:
- Adams County Building Safety Division
- Arapahoe County Building Division
- Boulder County Building Safety and Inspection Services
- Pikes Peak Regional Building Department
- Jefferson County Division of Building Safety
- Larimer County Building Division
- City of Aurora Building Division
- Denver Community Planning and Development
Finding the right permit office
- Identify the exact property address and municipality.
- Confirm whether the city, town, township, borough, parish, county, or regional authority serves that address.
- Ask which permits, zoning approvals, plan reviews, and inspections apply to the project.
- Keep the official portal, permit number, approved plans, and inspection instructions together.
Our guide City or county: who issues your building permit? explains how to check city limits and unincorporated areas using parcel maps and tax records.
What to check in Colorado
Colorado has no statewide building code for private construction. Each city and county sets its own code and permit rules, and since 2023 any local code update must include a qualifying energy code.
Local codes; state energy-code minimums. An address inside an incorporated city or another local jurisdiction may be served by a separate building department.