How much housing is Seattle building?
Net new homes: units added by building permits as they reach completion (final inspection), minus units demolished. How units are counted
1950-01-01 → today
6,196 added − 528 demolished
8,906 in the 12 months before →3,707 added − 415 demolished
5,436 by the same date in 2025 →Provisional: completions are sometimes recorded late.
Units completed per year, by housing type
Units added by housing type above the line, units demolished below it, and the net as a line. Look for which kinds of housing drive the totals and how the mix shifts after policy changes. Click a bar to see its permits.
17,152 projects
- 1Citywide MHA, Apr 19, 2019. Mandatory Housing Affordability takes effect citywide (Ord. 125791). It had applied to six areas since 2017. Source
- 2ADU reform, Aug 8, 2019. Two ADUs per lot; owner-occupancy and parking requirements removed (CB 119544). Source
- 3Permanent middle housing, Jan 21, 2026. Permanent middle-housing zoning takes effect (CB 120993). Source
1% of these units have a housing type inferred from the permit description because the City didn't record one; 0% couldn't be classified. How types are assigned
Trailing 12-month total
Net units completed in the 12 months up to each month. Smooths out seasonal swings, so it's the fairest way to tell whether the city is speeding up or slowing down.
Largest completions
The biggest permits completed between Jan 1, 1950 and Oct 5, 2026, and their share of the 136,134 units added in that period.
| Address | Type | Completed | Units | Share |
|---|---|---|---|---|
1120 DENNY WAY Phased project: Construct south residential tower and commercial base and below grade structure occupy per plan. Mechanical included. (Construct mixed-use building with two residential towers and below grade parking/review and process 2 Records under 6530812-PH.) Street View | Large multifamily | Dec 12, 2022 | 680 | 0.5% |
2121 6TH AVE Phase III of III to construct a mixed use building. Complete building- structural & architectural and occupy per plan. Street View | Large multifamily | Sep 18, 2013 | 654 | 0.5% |
1101 8TH AVE Phased project: Construction of a residential office and retail building with below grade parking and occupy per plan. Street View | Large multifamily | Feb 13, 2023 | 548 | 0.4% |
970 DENNY WAY Construction of multi-family and retail building with below grade parking and occupy per plan. Street View | Large multifamily | Nov 19, 2018 | 461 | 0.3% |
2000 3RD AVE Phased project: Construct high rise apartment building with offices retail and below grade parking occupy per plan. Mechanical Included. Street View | Large multifamily | Nov 13, 2025 | 459 | 0.3% |
2014 FAIRVIEW AVE Phased project: Construct a new apartment building with ground floor commercial spaces and below grade parking occupy per plan. Mechanical included. Street View | Large multifamily | Jun 2, 2022 | 457 | 0.3% |
900 RAINIER AVE S Phased project: Construct mixed-use residential building with below-grade parking occupy per plan. Existing landmarked structure at 1130 Rainier Ave S to remain. Street View | Large multifamily | Oct 8, 2025 | 450 | 0.3% |
2202 8TH AVE Establish use as multi-family residential and general retail. Construct high-rise apartment and retail building and occupy per plan. Street View | Large multifamily | Apr 16, 2019 | 450 | 0.3% |
425 FAIRVIEW AVE N Construction of a residential and retail structure with two towers on a common base with below grade parking and occupy per plan. Street View | Large multifamily | Mar 1, 2019 | 433 | 0.3% |
2301 E UNION ST Construct mixed use apartment building with ground level commercial and below grade parking occupy per plan. (Construct mixed use apartment building with ground level commercial and below grade parking. Includes shoring and excavation. Review/process 2 Record #'s under 6608500-CN.) Street View | Large multifamily | Mar 29, 2022 | 432 | 0.3% |