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Thurston County Building and Land Use Codes


If you have questions about building setbacks, permitted uses based on zoning, critical area buffers, resource lands, subdivision, etc, you'll want to research our Thurston County Code.

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Which Codes May We Help You Find?


All County Codes - Municode

read the code text through Municode or see topics below

Drainage Manual

standards for managing stormwater runoff and erosion - plans required

Land Use Ordinances

zoning, critical areas, shorelines, subdividing land

Environmental Health Codes

sewage disposal (septic tanks), public water supplies.

Building Codes

setbacks, fire, building, plumbing, electrical and mechanical codes

Public Works Codes

road standards, stormwater drainage, utility ordinance


2018 Building Code Amendments

 The State Building Code has adopted the 2018 International Building Codes on February 1, 2021. 

These ICC codes can be viewed at the Building Development Center or online at: ICCSafe.org. https://codes.iccsafe.org/codes/i-codes Roll over the code icon and choose view. 

The Uniform Plumbing Code can be read at https://www.iapmo.org/publications/read-uniform-codes-online/

To see the state amendments to those codes and the Washington State Energy Code, visit the State Building Code Council Website. https://sbcc.wa.gov/state-codes-regulations-guidelines/state-building-code

For the Commercial Energy Code information and forms also visit: www.waenergycodes.com.

For the Residential Energy Code information and forms also visit: http://www.energy.wsu.edu/buildingefficiency/energycode.aspx

To see the Thurston County amendments to those code see: https://library.municode.com/wa/thurston_county/codes/code_of_ordinances

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