California Assessors Office Contact Information

California Assessors Office Contact List

Contact Information for the different California Assessors offices.

The following  is a list of the California County Assessor Offices. We have included their main phone number, link to their website and a direct link to their Assessor Forms Page to assist you with your California Proposition 19 claim. This information was last updated on 2/2/2023.

If you are applying for a Proposition 19 property tax reassessment exclusion on an inherited home, please also visit our How to File a California Proposition 19 Claim page. The page will provide you with a list of suggested documents to include along with your claim. Doing so may help you avoid a delay in receiving your Proposition 19 property tax reassessment exclusion.

County Main Phone Website Forms Page
Alameda 800-660-7725 Alameda County Assessor Forms Page
Alpine 530-694-2283 Alpine County Assessor Forms Page
Amador 209-223-6351 Amador County Assessor Forms Page
Butte 530-552-3800 Butte County Assessor  Forms Page
Calaveras 209-754-6356 Calaveras County Assessor  Forms Page
Colusa 530-458-0450 Colusa County Assessor  Forms Page
Contra Costa 925-313-7400 Contra Costa County Assessor  Forms Page
Del Norte 707-464-7200 Del Norte County Assessor  Forms Page
El Dorado 530-573-3422 El Dorado County Assessor  Forms Page
Fresno 800-742-1011 Fresno County Assessor  Forms Page
Glenn 530-934-6402 Glenn County Assessor  Forms Page
Humboldt 866-240-0485 Humboldt County Assessor  Forms Page
Imperial 442-265-1300 Imperial County Assessor  Forms Page
Inyo 760-878-0302 Inyo County Assessor  Forms Page
Kern 661-868-3485 Kern County Assessor  Forms Page
Kings 559-852-2486 Kings County Assessor  Forms Page
Lake 707-263-2302 Lake County Assessor  Forms Page
Lassen 530-251-8241 Lassen County Assessor  Forms Page
Los Angeles 213-974-3211 Los Angeles County Assessor  Forms Page
Madera 559-675-7710 Madera County Assessor  Forms Page
Marin 415-473-7215 Marin County Assessor  Forms Page
Mariposa 209-966-2332 Mariposa County Assessor  Forms Page
Mendocino 707-234-6800 Mendocino County Assessor  Forms Page
Merced 209-385-7434 Merced County Assessor  Forms Page
Modoc 530-233-6218 Modoc County Assessor  Forms Page
Mono 760-932-5510 Mono County Assessor  Forms Page
Monterey 831-755-5035 Monterey County Assessor  Forms Page
Napa 707-253-4466 Napa County Assessor  Forms Page
Nevada 530-265-1232 Nevada County Assessor  Forms Page
Orange 714-834-2727 Orange County Assessor  Forms Page
Placer 530-889-4300 Placer County Assessor  Forms Page
Plumas 530-283-6380 Plumas County Assessor  Forms Page
Riverside 800-746-1544 Riverside County Assessor  Forms Page
Sacramento 916-875-0700 Sacramento County Assessor  Forms Page
San Benito 831-636-4030 San Benito County Assessor  Forms Page
San Bernardino 909-387-8307 San Bernardino County Assessor  Forms Page
San Diego 619-236-3771 San Diego County Assessor  Forms Page
San Francisco 415-554-5596 San Francisco County Assessor  Forms Page
San Joaquin 209-468-2630 San Joaquin County Assessor  Forms Page
San Luis Obispo 805-461-6143 San Luis Obispo County Assessor  Forms Page
San Mateo 650-363-4500 San Mateo County Assessor  Forms Page
Santa Barbara 805-568-2550 Santa Barbara County Assessor  Forms Page
Santa Clara 408-299-5500 Santa Clara County Assessor  Forms Page
Santa Cruz 831-454-2002 Santa Cruz County Assessor  Forms Page
Shasta 530-225-3600 Shasta County Assessor  Forms Page
Sierra 530-289-3283 Sierra County Assessor  Forms Page
Siskiyou 530-842-8036 Siskiyou County Assessor  Forms Page
Solano 707-784-6200 Solano County Assessor  Forms Page
Sonoma 707-565-1888 Sonoma County Assessor  Forms Page
Stanislaus 209-525-6461 Stanislaus County Assessor  Forms Page
Sutter 530-822-7160 Sutter County Assessor  Forms Page
Tehama 530-527-5931 Tehama County Assessor  Forms Page
Trinity 530-623-1257 Trinity County Assessor  Forms Page
Tulare 559-636-5100 Tulare County Assessor  Forms Page
Tuolumne 209-533-5535 Tuolumne County Assessor  Forms Page
Ventura 805-654-2181 Ventura County Assessor  Forms Page
Yolo 530-666-8135 Yolo County Assessor  Forms Page
Yuba 530-749-7820 Yuba County Assessor  Forms Page