Contractors and construction in Washington: licenses and permits

• Business registration

  Register your LLC or corporation with the Washington Secretary of State, Corporations. Official site

• Trade license

  Washington licenses or registers contractors at the state level for at least some work, often home improvement or jobs above a dollar amount. Check what your trade and job size need. Washington details

• Sales tax permit

  Register with Washington before your first taxable sale. Register in Washington

• City or county license

  Most cities and counties require a general business license or tax receipt, and some require a zoning check for home businesses. Call your city hall or county clerk.

• Federal

  Every business with employees needs an EIN, and it's free. Get it free

Full Washington guide

General guidance from public sources; rules change and vary by city. Confirm with the agency before you start work.