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