Seattle Comprehensive Plan ‘One Seattle’ (update)
Core idea
Nodes + corridors + resilience
Why it matters
Accommodates state housing mandates
Description
The One Seattle Comprehensive Plan is the major update to Seattle's comprehensive plan advanced in 2024, prepared by the City of Seattle under Washington State's Growth Management Act. It builds on the city's established urban-village strategy but broadens it, directing growth to a network of centres and corridors, expanding the areas where multi-family and middle housing are allowed, and strengthening policies on climate resilience, tree canopy and displacement risk. The update responds directly to state legislation requiring cities to permit more housing types in formerly single-family zones, and sets the framework for subsequent rezoning across the city.
Significance
The plan is significant as a test of how a prosperous, high-cost American city adapts its long-standing growth-management framework to state-level housing mandates and climate commitments. It sits within the national debate over upzoning single-family neighbourhoods, with contention over how far the plan should go beyond state minimums and how anti-displacement measures should accompany intensification. As an evolution of Seattle's influential urban-village model of the 1990s, it illustrates the shift from containing growth in designated nodes to distributing capacity more broadly across the city.
What shaped it
- The compact city (1973-1990s)
- Transit-oriented development (TOD) (1993)
- Urban resilience (2013)
- Paris Climate Agreement (2015)
Sources
- https://www.seattle.gov/opcd/one-seattle-plan
- https://harrell.seattle.gov/2024/10/16/mayor-harrell-releases-details-of-one-seattle-comprehensi