# Counties in California by housing units authorized by building permits, 2025

All 58 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `building_permit_units`
- Unit: count
- Definition: Annual number of new privately owned housing units authorized by building permits, from the US Census Bureau Building Permits Survey.
- Source: U.S. Census Bureau, Building Permits Survey: final annual county estimates of new privately owned housing units authorized, including imputation (https://www2.census.gov/econ/bps/County/co2025a.txt)
- Retrieved: 2026-10-10
- Citation: U.S. Census Bureau. Building Permits Survey: final annual county estimates of new privately owned housing units authorized, including imputation. https://www2.census.gov/econ/bps/County/co2025a.txt. Retrieved 2026-10-10.
- Web page: https://invokely.ai/rankings/building-permit-housing-units/california-counties
- CSV: https://invokely.ai/download/rankings/building-permit-housing-units/california-counties.csv

| Rank | Place | count |
|---:|---|---:|
| 1 | Los Angeles County | 22,250 |
| 2 | San Diego County | 11,707 |
| 3 | Riverside County | 9,697 |
| 4 | Sacramento County | 6,561 |
| 5 | San Bernardino County | 6,240 |
| 6 | Santa Clara County | 5,323 |
| 7 | Orange County | 4,992 |
| 8 | Placer County | 3,254 |
| 9 | Kern County | 3,159 |
| 10 | Alameda County | 2,778 |
| 11 | San Joaquin County | 2,522 |
| 12 | Fresno County | 2,271 |
| 13 | San Mateo County | 2,216 |
| 14 | Tulare County | 1,790 |
| 15 | Sonoma County | 1,690 |
| 16 | Ventura County | 1,609 |
| 17 | San Francisco County | 1,444 |
| 18 | Santa Barbara County | 1,371 |
| 19 | Madera County | 1,247 |
| 20 | Stanislaus County | 1,205 |
| 21 | Contra Costa County | 1,163 |
| 22 | Butte County | 997 |
| 23 | Solano County | 881 |
| 24 | Merced County | 780 |
| 25 | Monterey County | 775 |
| 26 | San Luis Obispo County | 663 |
| 27 | Kings County | 507 |
| 28 | El Dorado County | 477 |
| 29 | Santa Cruz County | 470 |
| 30 | Yuba County | 461 |
| 31 | Yolo County | 397 |
| 32 | Napa County | 364 |
| 33 | Sutter County | 360 |
| 34 | Humboldt County | 325 |
| 35 | Shasta County | 254 |
| 36 | San Benito County | 247 |
| 37 | Imperial County | 242 |
| 38 | Nevada County | 198 |
| 39 | Marin County | 149 |
| 40 | Glenn County | 115 |
| 41 | Del Norte County | 113 |
| 42 | Tuolumne County | 88 |
| 43 | Lake County | 85 |
| 44 | Calaveras County | 72 |
| 45 | Amador County | 67 |
| 46 | Plumas County | 44 |
| 47 | Mono County | 43 |
| 48 | Siskiyou County | 41 |
| 49 | Tehama County | 36 |
| 50 | Trinity County | 33 |
| 51 | Mariposa County | 22 |
| 52 | Colusa County | 17 |
| 52 | Lassen County | 17 |
| 54 | Inyo County | 10 |
| 55 | Modoc County | 9 |
| 56 | Alpine County | 4 |
| 57 | Mendocino County | 3 |
| 58 | Sierra County | 1 |