States › California › 2018
State, one year
California in 2018
Index change and building permits for the year, with every county.
In 2018 the FHFA house price index for California changed +6.5%, against +5.7% for the United States and +6.4% in 2017.
113,502 housing units were authorised by building permits in the state that year (58,831 single-family), −1.1% on 2017; the national total was 1,328,827.
Counties in 2018
Ranked by the county index change from 2017 to 2018 (FHFA annual county index). Permits are units authorised in 2018; per 1,000 uses the vintage 2025 population.
| County | Index change 2018 | Units permitted | Single-family | Per 1,000 |
|---|---|---|---|---|
| Trinity County | +14.2% | 55 | 55 | 3.5 |
| Santa Clara County | +11.8% | 8,191 | 1,915 | 4.3 |
| San Mateo County | +11.3% | 1,116 | 320 | 1.5 |
| Alameda County | +9.0% | 8,056 | 1,965 | 4.9 |
| Merced County | +8.7% | 630 | 630 | 2.1 |
| Glenn County | +8.6% | 59 | 49 | 2.1 |
| Sonoma County | +8.6% | 3,279 | 3,169 | 6.7 |
| Colusa County | +8.4% | 68 | 36 | 3.1 |
| Stanislaus County | +8.4% | 759 | 684 | 1.4 |
| Lake County | +8.2% | 113 | 87 | 1.7 |
| San Joaquin County | +8.2% | 3,280 | 2,920 | 4.0 |
| Madera County | +8.1% | 503 | 503 | 3.0 |
| Solano County | +7.8% | 990 | 954 | 2.2 |
| Del Norte County | +7.7% | 25 | 25 | 0.9 |
| Butte County | +7.5% | 703 | 595 | 3.4 |
| Yuba County | +7.5% | 379 | 373 | 4.3 |
| Tehama County | +7.4% | 144 | 128 | 2.2 |
| San Francisco County | +7.3% | 5,178 | 28 | 6.3 |
| Riverside County | +7.1% | 9,232 | 7,676 | 3.6 |
| Contra Costa County | +7.0% | 2,907 | 1,627 | 2.5 |
| Fresno County | +7.0% | 2,929 | 2,213 | 2.8 |
| San Bernardino County | +7.0% | 5,577 | 3,915 | 2.5 |
| Sacramento County | +6.8% | 4,667 | 3,578 | 2.9 |
| Los Angeles County | +6.7% | 22,009 | 5,957 | 2.3 |
| Sutter County | +6.7% | 97 | 97 | 1.0 |
| Yolo County | +6.6% | 776 | 391 | 3.5 |
| Mono County | +6.5% | 71 | 64 | 5.7 |
| Sierra County | +6.5% | 6 | 6 | 1.9 |
| Mariposa County | +6.3% | 36 | 34 | 2.1 |
| San Benito County | +6.0% | 553 | 551 | 7.9 |
| San Diego County | +6.0% | 9,834 | 3,489 | 3.0 |
| Monterey County | +5.9% | 732 | 571 | 1.7 |
| Napa County | +5.9% | 269 | 102 | 2.0 |
| El Dorado County | +5.8% | 543 | 543 | 2.8 |
| Mendocino County | +5.8% | 140 | 140 | 1.6 |
| Placer County | +5.7% | 1,887 | 1,881 | 4.3 |
| Imperial County | +5.6% | 400 | 274 | 2.2 |
| Shasta County | +5.6% | 306 | 306 | 1.7 |
| Calaveras County | +5.5% | 112 | 112 | 2.4 |
| Lassen County | +5.5% | 7 | 7 | 0.2 |
| Marin County | +5.5% | 164 | 108 | 0.6 |
| Tulare County | +5.5% | 1,528 | 1,206 | 3.1 |
| Santa Cruz County | +5.4% | 426 | 238 | 1.6 |
| Siskiyou County | +5.4% | 54 | 50 | 1.3 |
| Kings County | +5.3% | 352 | 294 | 2.3 |
| Orange County | +5.2% | 7,515 | 4,085 | 2.4 |
| Kern County | +5.1% | 2,452 | 2,073 | 2.6 |
| Nevada County | +5.0% | 541 | 390 | 5.3 |
| San Luis Obispo County | +4.9% | 1,050 | 692 | 3.7 |
| Inyo County | +4.7% | 0 | 0 | 0.0 |
| Plumas County | +4.7% | 41 | 41 | 2.2 |
| Amador County | +4.5% | 172 | 172 | 4.1 |
| Ventura County | +4.4% | 1,204 | 625 | 1.4 |
| Humboldt County | +4.3% | 379 | 178 | 2.9 |
| Tuolumne County | +4.2% | 68 | 68 | 1.3 |
| Santa Barbara County | +3.9% | 928 | 631 | 2.1 |
| Alpine County | +2.1% | 4 | 4 | 3.8 |
| Modoc County | −5.7% | 6 | 6 | 0.7 |
Permits by year, 1995–2025
Housing units authorised in California by yearsingle-family2+ unit buildings
Source: Federal Housing Finance Agency annual state and county house price indexes (updated March 31, 2026); Census Bureau Building Permits Survey annual state and county files. Public domain. Methodology.