Metro area in Washington · part of the Seattle-Tacoma, WA combined area
Seattle-Tacoma-Bellevue, WA
The Seattle-Tacoma-Bellevue metro area authorized an average of 21,641 new housing units a year in 2021–2025, the second-largest total of the 48 metro areas based in the Pacific states. Single-family houses made up 32% of the units authorized in 2021–2025, the second-lowest share among the 48 metro areas based in the Pacific states. Its busiest year since 2004 was 2021, with 30,743 units; 2025 came to 51% of that.
Single-family2–4 units5+ units
Houses or apartments
The closest match in building mix among the 386 other metro areas is Kiryas Joel (61% in five-plus buildings). That share has risen sharply since 2004–2006, when it stood at 28%. Duplexes to fourplexes are unusually common here: 6.7% of units, against 3.5% nationally. Units in five-plus buildings peaked in 2021 (20,321), single-family houses in 2005 (17,565).
Busiest permit offices
Across the metro area, 75 permit offices authorized new housing in 2021–2025. The busiest was Seattle, with 36,530 units or 34% of the total, followed by Pierce County (unincorporated) with 9,957. Among the three largest, Seattle put 80% of its units in five-plus buildings, Snohomish County (unincorporated) 14%.
Share of the units authorized in the metro area, 2021–2025.
The wider Seattle-Tacoma region
The Census Bureau groups Seattle with 3 neighboring metro areas in the Seattle-Tacoma, WA combined area. Metro areas in it authorized 25,684 units a year in 2021–2025 (micropolitan parts not counted); Seattle accounted for 84%. The others, with their yearly averages: Bremerton (1,864), Olympia (1,599), Mount Vernon (580).
Where in the metro
King County accounted for 63% of the metro area's units in 2021–2025, Pierce County for 19%.
Boom, bust and since
Its peak year is shared by 27 other metro areas, among them Denver, Charlotte, Austin. Annual permits fell from 25,743 during the mid-2000s boom to 7,419 in 2009, a drop of 71%. The nearest bust profile in the Pacific states was Spokane's (69%). The 2021–2025 pace of 21,641 units a year is 14% below the 2004–2006 pace. Permits rose 9 years in a row up to 2018. From 2024 to 2025 the count fell 13%.
Relative to population
With 4,161,883 residents in July 2025, Seattle authorized 5.3 units per 1,000 residents a year in 2021–2025, close to the national 4.7. The metro areas with the nearest rates are Olympia (5.3) and Minneapolis (5.2).
Similar in size
| Metro area | 2004–2025 | 2025 units | Per 1,000 a year | 5+ share |
|---|---|---|---|---|
| Riverside-San Bernardino-Ontario, CA | 15,937 | 3.6 | 28% | |
| San Francisco-Oakland-Fremont, CA | 7,750 | 2.0 | 62% | |
| Detroit-Warren-Dearborn, MI | 8,805 | 1.8 | 32% | |
| Seattle-Tacoma-Bellevue, WA | 15,659 | 5.3 | 61% | |
| Minneapolis-St. Paul-Bloomington, MN-WI | 14,516 | 5.2 | 49% |
Rates and shares: 2021–2025.
Every yearly figure behind the chart, split by building size: yearly-units.csv. State view: Washington. Counting rules.