Hometriva logoHometriva

Jurisdiction directory

California home project permits by county

Many California households live outside city limits, where the county building department — not a city — issues the permit. 22 California counties, covering the state's largest jurisdictions, are inventoried here.

Model reviewed August 2026

Counties covered

22

largest jurisdictions first

Municipalities tracked

36

in California

Population covered

34.7M

residents in listed counties

Code basis

Statewide

California Residential Code (Title 24, Part 2.5) plus the Title 24 energy standards

Featured counties

The largest and most active permit jurisdictions in the state.

Los Angeles County9,663,345 residents · seat Los AngelesOrange County3,151,184 residents · seat Santa AnaSan Diego County3,269,973 residents · seat San DiegoRiverside County2,473,000 residents · seat RiversideSan Bernardino County2,189,000 residents · seat San BernardinoSanta Clara County1,877,592 residents · seat San JoseAlameda County1,622,188 residents · seat OaklandSacramento County1,585,055 residents · seat SacramentoContra Costa County1,156,555 residents · seat MartinezFresno County1,015,190 residents · seat FresnoVentura County829,590 residents · seat VenturaKern County913,820 residents · seat BakersfieldSan Francisco County808,437 residents · seat San FranciscoSan Joaquin County789,410 residents · seat StocktonStanislaus County552,999 residents · seat ModestoSonoma County482,404 residents · seat Santa RosaTulare County477,054 residents · seat VisaliaSolano County451,716 residents · seat FairfieldSanta Barbara County444,500 residents · seat Santa BarbaraPlacer County412,300 residents · seat Auburn

All California counties we cover

22 counties, largest first.

Los Angeles CountySeat: Los Angeles · 9,663,345 residentsSan Diego CountySeat: San Diego · 3,269,973 residentsOrange CountySeat: Santa Ana · 3,151,184 residentsRiverside CountySeat: Riverside · 2,473,000 residentsSan Bernardino CountySeat: San Bernardino · 2,189,000 residentsSanta Clara CountySeat: San Jose · 1,877,592 residentsAlameda CountySeat: Oakland · 1,622,188 residentsSacramento CountySeat: Sacramento · 1,585,055 residentsContra Costa CountySeat: Martinez · 1,156,555 residentsFresno CountySeat: Fresno · 1,015,190 residentsKern CountySeat: Bakersfield · 913,820 residentsVentura CountySeat: Ventura · 829,590 residentsSan Francisco CountySeat: San Francisco · 808,437 residentsSan Joaquin CountySeat: Stockton · 789,410 residentsStanislaus CountySeat: Modesto · 552,999 residentsSonoma CountySeat: Santa Rosa · 482,404 residentsTulare CountySeat: Visalia · 477,054 residentsSolano CountySeat: Fairfield · 451,716 residentsSanta Barbara CountySeat: Santa Barbara · 444,500 residentsPlacer CountySeat: Auburn · 412,300 residentsSan Luis Obispo CountySeat: San Luis Obispo · 281,401 residentsMonterey CountySeat: Salinas · 224,000 residents

Sources

Sources & verification

Model vintage August 2026. The links above are the issuing agencies' own pages — we publish them so you can confirm the current rule yourself, not as evidence that each fact on this page was re-checked with them today. Cost figures are modeled estimates based on national baselines adjusted for local labor and material pricing, not quotes. Permit rules change; confirm with the building department before starting work.