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Thurston County, Washington

The content on the Thurston County website is currently provided in English. We are providing the “Translation” for approximately 10 languages. The goal of the translation is to provide visitors with limited English proficiency to access information on the website in other languages. The translations do not translate all types of documents, and it may not give you an exact translation all the time. The translations are made through an automated process, which may not result in accurate or precise translations, particularly of technical and legal terminology.

Community Planning and Economic Development

You have options for submitting permit application packets and forms to Thurston County.

In Person - NEW LOCATION - 3000 Pacific Ave SE in Olympia

  • Building Development Center (BDC) office - 1st floor, Suite 100 of the new county location at 3000 Pacific Ave SE, in Olympia, Washington. (BDC is no longer at the County Courthouse).
  • Most applications must be submitted in person at the BDC between 8 a.m. - 4 p.m.
  • Staff check applications for completeness and let you know right away if something is missing.
  • Be prepared to pay by cash, check, or credit card (2.35% transaction fee applies).


  • Only available for the items listed below.
  • A county Permit Technician will contact you for credit card payment. (2.35% credit card transaction fee applies). 
  • Email Minor Permit types below to 
    • Minor Permit Applications for Residential Structures
    • Time of Transfers
    • Refund Requests
    • Extension and Withdraw Requests  
  • Email Septic Record Drawing Requests to
  • Email Drainage Record Drawings to


  • If submitting applications by mail, a maximum of five (5) applications may be included in a mailing. 
  • All application types may be submitted by mail to:
  • Thurston County Building Development Center, 3000 Pacific Ave SE, Olympia, WA  98501