Building permits · May 2026
Ada County Building Permits
Monthly residential building permits for Ada County, Idaho — 570 units authorized in May 2026, 5,275 over the last 12 months — latest month +10.3% vs. a year earlier.
570
Units (latest month)
451
Single-family units
119
Multifamily (5+) units
$156,856,107
Reported value
Trailing 12 months: 5,275 units permitted · latest month +10.3% vs. a year earlier.
| Structure type | Units | Share |
|---|---|---|
| Single-family (1-unit) | 451 | 79.1% |
| 2-unit structures | 0 | 0.0% |
| 3–4 unit structures | 0 | 0.0% |
| Multifamily (5+ units) | 119 | 20.9% |
| All units | 570 | 100% |
Ada County building permits — FAQ
How many building permits were issued in Ada County?+
570 new residential units were authorized in Ada County, Idaho in May 2026, and 5,275 over the trailing 12 months (U.S. Census Building Permits Survey).
What share of Ada County permits are multifamily?+
20.9% of Ada 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.