Commercial projects


Commercial construction includes new buildings and work on, within, or added to existing buildings. Work on existing structures is often referred to as a tenant improvement. A permit technician can help you determine your project requirements and related fees.

Fees are established by county ordinance and are calculated automatically by computer during the application process. You will receive a fee estimate during your initial visit to our office and a final cost when you submit your applications.

Permit fees cover the cost of processing, plan review, and inspections to ensure code compliance and safety standards are met.

We recommend meeting with a plans examiner at the early stages of design to avoid code corrections later in the process. You may schedule an appointment by contacting Michelle Finley at 564.397.4088 or

Adoption of building codes

The 2018 amended Washington Administrative Code (WAC) were adopted on February 1, 2021.

Forms and submittal requirements

See the commercial forms page for applications, checklists, handouts, information and worksheets.

Types of commercial projects

Visit the commercial permits page where we explain the different types of commercial permits.

See also Commercial Permit Categories handout.

Erosion control and stormwater

See our erosion control and stormwater pages for related requirements.

Basic steps

Most construction projects follow these basic steps:

  1. Contractor submits application, pays plan review and other fees
  2. Plans examiner reviews plans 
  3. Permit technicians process application
  4. Permit technician issues permit
  5. Contractor may begin work
  6. Inspector visits site to inspect construction at important stages
  7. Permit technician issues Certificate of Occupancy

Common handouts

All files are PDF unless indicated otherwise.