Seattle has over 62,000 residential units in some stage of development — design review, permitting, construction, or recently completed. That number tells you where the city's housing supply is going. This is what the pipeline looks like as of early 2026.
Total Units in the Pipeline
Those 62,000+ units span every stage of the development process:
- Under Construction — the largest share. Cranes up, work underway.
- In Review / Design Review — working through permitting, 1-3 years from breaking ground.
- Approved — permitted and ready to build, waiting on financing or market timing.
- Recently Completed — finished construction in the past year.
Where the Apartments Are Going
The unit counts cluster where you'd expect — near light rail, in zones built for density, close to jobs.
- Downtown leads with the largest projects, including several 200+ unit towers
- International District and First Hill follow with dozens of transit-oriented projects, most in the 50-150 unit range
- Capitol Hill is filling in along Broadway and the Pike/Pine corridor
- Northgate is growing fast around the light rail station and the old mall site
- University District mixes student housing with market-rate apartments near UW
- Rainier Valley is picking up with light rail access and open land
- Ballard keeps building — mostly 5-8 story apartments and mixed-use
Multi-Family vs. Mixed-Use
Two categories dominate:
Multi-family residential — apartment buildings, 4-8 stories of units over a parking podium. Most common in LR and MR zones. These make up the majority of projects by count.
Mixed-use — residential units over ground-floor retail, restaurants, or small offices. Concentrated in NC zones along arterials. Mixed-use projects run larger and cost more to build because they serve two functions and two tenant types.
The Largest Projects
The biggest individual projects sit in three areas:
- South Lake Union and Downtown — towers exceeding 200 units each
- Interbay — large mixed-use developments near the future light rail station
- Northgate — master-planned redevelopment with multiple phases
What's Coming Next
Projects in design review now will break ground in 2027-2028. Projects under construction now will deliver units through 2026-2027.
Key trends to watch:
- Light rail corridor development, especially around new stations in West Seattle and Ballard (planned)
- Missing middle housing enabled by the One Seattle Plan's zoning changes
- Continued density in urban villages, where upzoning allows taller buildings near transit
Explore the Pipeline
You can browse the full apartment pipeline on BuildVue — filter by type, sort by unit count or construction value, and pull up any project for permits, design proposals, and timeline.
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