Contact Information:

Department of Community Development
6300 Southcenter Blvd., #100
Tukwila, WA 98188

Phone: 206 431-3670
Fax: 206 431-3665

Email Planning Division

Email Building Division

Email Permit Center

Shoreline Management

The City received approval from the Department of Ecology to the ordinances that the City Council approved. The new code went into effect on July 8th, 2020.

Here are links to the ordinances:



The Green/Duwamish River flows over 93 miles from the Cascade Mountains to Elliott Bay. Approximately 13 miles of the river meanders through Tukwila’s industrial district, urban center and residential neighborhoods. The river system has undergone extensive changes over the years. The population has increased dramatically, forests have been logged, levees have been built, streams and rivers rerouted, and freeways, homes, shopping and manufacturing centers constructed. As the impacts of human development have been recognized, State and Federal agencies have developed regulations that require local jurisdictions to provide better protection for remaining habitat, to control the collected storm water flowing directly into the river, and to identify and restore areas where habitat restoration can succeed.

In response to State and Federal requirements, Tukwila has adopted two policy documents related to the river – the Shoreline Master Program and land use policies in the City’s Comprehensive Plan.  To carry out these policies, zoning regulations have been adopted. Most development within 200 feet of the shoreline requires a  Shoreline Substantial Development Permit. The City’s shoreline development regulations balance economic and residential development with enhancement and stewardship of the ecological functions of the river.


The state Shoreline Management Act requires that counties, cities, and towns periodically review and, if necessary, update  their Shoreline Master Program (SMP) every eight years.  The City of Tukwila’s update started in the fall of 2018 and will be complete in 2019. More information is available on the state Department of Ecology website.

The City of Tukwila and Washington Department of Ecology are accepting comments on a periodic review of the City’s shoreline master program (SMP) under RCW 90.58.080(4). The City has prepared draft SMP amendments to keep the SMP current with changes in state law, changes in other Tukwila plans and regulations, and other changed local circumstances.

For more information please email or mail:

SMP Periodic Update
Department of Community Development
6300 Southcenter Bl. Suite 100
Tukwila, WA 98188

Proposed amendments to the City SMP are available for review at and the Department of Community Development at the address above.

Partners in Shoreline Management

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