United States • Washington
Site analysis in Seattle
An introduction to site analysis in Seattle, covering planning context, common constraints, climate, terrain and transport. Use this city overview to identify what needs checking at the specific site.
Use this overview to plan your research. Verify current requirements and site-specific conditions against the relevant primary sources. Read our data sources, coverage and limits guide.
Planning regime
Seattle Land Use Code + Mandatory Housing Affordability (MHA) + State Growth Management Act
Key constraints
- Shoreline Master Program
- Critical areas (steep slope, wetland, fish habitat)
- Landmark districts
- Pioneer Square / Pike Place
Climate context
Csb Mediterranean transitional. 940mm rainfall (less than reputation). Mild but cloudy winters.
Topography
Hills throughout (Queen Anne, Capitol Hill, First Hill). Steep slope critical area regulations. Puget Sound and Lake Washington bound the city.
Transport spine
Sound Transit Link light rail (expanding), Sounder commuter rail, Metro bus, ferries.
Building height context
Downtown allows 500ft+. South Lake Union 240ft. MHA upzones in urban villages allow 4-7 storeys in former SF zones.
Notable recent projects
- Climate Pledge Arena
- South Lake Union
- Northgate Light Rail TOD
Questions
What planning policies apply in Seattle?
Seattle Land Use Code + Mandatory Housing Affordability (MHA) + State Growth Management Act
What are the most common site constraints in Seattle?
Shoreline Master Program. Critical areas (steep slope, wetland, fish habitat). Landmark districts. Pioneer Square / Pike Place.
Can Atlasly run a site analysis in Seattle?
Available site information depends on the address and data source. Start with the site location and review the returned sources and coverage before using the results.
Run a site analysis in Seattle
Start with a site location, review the available evidence and identify the checks needed for your next design decision.
Open Atlas AIReview current plans and usage and source coverage for your project.