Building permits · May 2026
King County Building Permits
Monthly residential building permits for King County, Washington — 1,323 units authorized in May 2026, 10,603 over the last 12 months — latest month +248.2% vs. a year earlier.
1,323
Units (latest month)
191
Single-family units
1,085
Multifamily (5+) units
$361,898,975
Reported value
Trailing 12 months: 10,603 units permitted · latest month +248.2% vs. a year earlier.
| Structure type | Units | Share |
|---|---|---|
| Single-family (1-unit) | 191 | 14.4% |
| 2-unit structures | 40 | 3.0% |
| 3–4 unit structures | 7 | 0.5% |
| Multifamily (5+ units) | 1,085 | 82.0% |
| All units | 1,323 | 100% |
King County building permits — FAQ
How many building permits were issued in King County?+
1,323 new residential units were authorized in King County, Washington in May 2026, and 10,603 over the trailing 12 months (U.S. Census Building Permits Survey).
What share of King County permits are multifamily?+
85.6% of King County's May 2026 permitted units were in multifamily (2+ unit) buildings.
Where does this data come from?+
Figures come from the U.S. Census Bureau's Building Permits Survey, a monthly census of permit-issuing jurisdictions. PUMSdata is independent and not affiliated with the Census Bureau.