words that say Thurston County

Thurston County facilities are now open to the public with restrictions, including maintaining physical distancing of at least six feet at all times and, per the Washington State Secretary of Health’s face covering order wearing a cloth face covering or mask. If you come to county facilities, please be prepared for potentially long wait times or lines due to distancing guidelines. We continue to encourage residents to access county services online, by phone, by email, or through the use of drop boxes located outside of county buildings.
The availability of remote services vary by office and department.

Click here for office and department contact information
Click here for information on COVID-19

Land Use Ordinances

Land Use Ordinance List

red arrowLand use codes are complicated, but you don't need to do it alone!  The Building Development Center is here to help.  Stop by our office from 8 a.m. to 4:00 p.m. Monday through Friday to talk to a staff member and review maps.

Zoning Ordinances - General Unincorporated Thurston County

Zoning Ordinances - Urban Growth Areas

Urban growth areas are areas designated by a county, with input from towns and cities, where urban development is to occur. Urban growth areas have their own zoning requirements, which typically mirror the requirements of the neighboring city.

  • Read the code (See title numbers below to get to the correct section of the code.)
    • Lacey Urban Growth Area - see Title 21
    • Tumwater Urban Growth Area - see Title 22
    • Olympia Urban Growth Area - see Title 23
  • Click here to get applications/forms related to zoning.

Critical Areas Ordinancesalmon

Shoreline Master Program

Forest Lands Conversion (Timber Harvesting for Land Conversion)harvesting

Division of Land

A division of land means a subdivision, short subdivision or large lot subdivision. 

  • Read the code (See chapter numbers below to get to the correct section of the code.)
    • General provisions regulating the division of land (Chapter 18.04)
    • Short Plat (Chapter 18.32) - Division of land into 4 or fewer lots, any one of which is less than 5 acres
    • Large Lot (Chapter 18.28) - Division of land into 2 or more lots, all of which are 5 acres or larger and one one of which is smaller than 40 acres.
    • Olympia Urban Growth Area - see Title 23
    • Plat (Chapter 18.12) - Division of land into 5 or more lots, any of which is smaller than 5 acres.

Boundary Line Adjustment

A Boundary Line Adjustment (BLA) is a reconfiguration of property lines between two or more separate legal parcels.  BLAs are not subdivisions and cannot create new parcels or building sites. Another form of BLA is a "Lot Consolidation."  A Lot Consolidation is used to combined two existing parcels.  Lot Consolidations erase parcel lines so that only one parcel remains.

Contact Us

Thurston County Building Development Center, 2000 Lakeridge Drive SW, Olympia, WA 98502-6045.
Phone: (360) 786-5490. TTY/TDD call 711 or 1-800-833-6388 E-mail: permit@co.thurston.wa.us.


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