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 2/2/2025.

Loans to Trusts and Estates to qualify for California Proposition 19 and avoid property tax reassessment on an inherited home

Loans to Trusts and Estates to qualify for California Proposition 19 and avoid property tax reassessment on an inherited home. You can call (877) 464-1066 for a free benefit analysis.

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