Street, Alley and Pedestrian Improvements

See also: Environmental Review (SEPA)Street Improvement Exceptions

What Is It?

Our Land Use Code requires that streets and alleys adjacent and leading to lots being created, developed, or redeveloped, be improved or brought up to the minimum conditions specified in the code and Seattle Department of Transportation’s (SDOT) Right-of-Way Improvements Manual. 

These improvements include items such as:

  • Installing sidewalks, curbs, curb ramps, accessible crossings, drainage, or street trees
  • Surfacing streets or alleys with paving or gravel
  • Providing a signed agreement to help pay for future street or alley improvements
  • Designing your project so access to the site won't be affected by future street or alley improvements
  • Additional structure setbacks from property lines next to streets or alleys
  • Dedicating property to the City for future street or alley widening

When improvements are required by the Land Use Code, SDOT reviews and permits the construction of those improvements.

In addition to the requirements for street and alley improvements contained in the code, additional street and alley improvements may be required through the environmental review process.

Read the Code

Proposed Changes


Construction and Inspections

Nathan Torgelson, Director
Address: 700 5th Ave, Suite 2000, Seattle, WA, 98104
Mailing Address: P.O. Box 34019, Seattle, WA, 98124-4019
Phone: (206) 684-8600
Phone Alt: Violation Complaint Line: (206) 615-0808
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SDCI issues land use, construction, and trade permits, conducts construction and housing-related inspections, ensures compliance with our codes, and regulates rental rules. SDCI is committed to an antiracist workplace and to addressing racism through our work in the community.