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California

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California · find a service

Find county GIS and property maps in California

Browse official GIS tools, assessor map information and county map referrals. Some entries provide instructions or map indexes rather than an interactive GIS viewer.

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In California, 64 county departments publish 75 official links for this service. Reviewed requirements cover availability notices (11), processing time (2) and documents (1). 57 counties have a page for it below.

Before you start · 2 things to check
  • Start with the jurisdiction of the property. County permit offices may serve only unincorporated areas.
  • Use the official map and confirm project requirements with the planning or building office.

64 guides with reviewed service links · Reviewed local guides

Choose a county on the map

Highlighted counties have a reviewed service guide matching this selection. An agency may serve only a city or part of a county.

California58 counties
California county mapChoose a county to open its directory. Use the county search and list for smaller counties.Alameda County: open directoryAlpine County: open directoryAmador County: open directoryButte County: open directoryCalaveras County: open directoryColusa County: open directoryContra Costa County: open directoryDel Norte County: open directoryEl Dorado County: open directoryFresno County: open directoryGlenn County: open directoryHumboldt County: open directoryImperial County: open directoryInyo County: open directoryKern County: open directoryKings County: open directoryLake County: open directoryLassen County: open directoryLos Angeles County: open directoryMadera County: open directoryMarin County: open directoryMariposa County: open directoryMendocino County: open directoryMerced County: open directoryModoc County: open directoryMono County: open directoryMonterey County: open directoryNapa County: open directoryNevada County: open directoryOrange County: open directoryPlacer County: open directoryPlumas County: open directoryRiverside County: open directorySacramento County: open directorySan Benito County: open directorySan Bernardino County: open directorySan Diego County: open directorySan Francisco County: open directorySan Joaquin County: open directorySan Luis Obispo County: open directorySan Mateo County: open directorySanta Barbara County: open directorySanta Clara County: open directorySanta Cruz County: open directoryShasta County: open directorySierra County: open directorySiskiyou County: open directorySolano County: open directorySonoma County: open directoryStanislaus County: open directorySutter County: open directoryTehama County: open directoryTrinity County: open directoryTulare County: open directoryTuolumne County: open directoryVentura County: open directoryYolo County: open directoryYuba County: open directory
County directory Reviewed service guides available
Map for browsing; agency service areas may differ.
Map source

U.S. Census boundaries via U.S. Atlas · 2017 edition, simplified for display.

64 guides, grouped by county. Open your county below, or choose it above or type a city above to see each guide’s instructions, conditions and sources here.

Alameda1 guide
County government · Alameda

Assessor

Serves Alameda County, California. Use the official service instructions to confirm jurisdiction and appointment requirements.

Parcel Map FAQs (opens in a new tab)
Assessor maps are not surveys

No. The Assessor’s Office cannot determine or verify exact property boundaries. Parcel maps are approximate representations for assessment purposes only. To determine actual property boundaries, you should hire a licensed land surveyor.

Official information checked October 26, 2026 · Details & sources

Full guide, contact details & sources →
Alpine1 guide
Amador1 guide
Butte1 guide
Calaveras1 guide
County government · Calaveras

Assessor

Listed for Calaveras County, California. The cited official directory identifies this office; task requirements and the availability of individual locations must be confirmed with the office.

Parcel Maps (opens in a new tab)
Uncertified assessment maps

NOTICE: Assessor Parcel maps are designed for assessment purposes only and are not official survey documents. Data provided is for informational purposes only. The maps and data available here are NOT CERTIFIED. If you require information or maps for ANY legal purpose, please contact the County Assessor's Office for assistance at (209) 754-6356.

Official information checked October 26, 2026 · Details & sources

Full guide, contact details & sources →
Colusa1 guide
Contra Costa1 guide
Del Norte1 guide
El Dorado1 guide
Fresno1 guide
Glenn1 guide
Humboldt1 guide
Imperial1 guide
Inyo1 guide
County government · Inyo

Assessor

Listed for Inyo County, California. The cited official directory identifies this office; task requirements and the availability of individual locations must be confirmed with the office.

GIS Data & Maps (opens in a new tab)
Published GIS datasets and web maps

Inyo County's Geographic Information System (GIS) provides access to many datasets, including; parcels, road centerlines, addresses, a variety of environmental hazards, administrative boundaries, elevation data, and imagery. Data can be downloaded in GIS format, or viewed in web maps. The GIS staff are located in the Information Services Department, and provide services and data to public and private organizations, individuals, and county employees.

Official information checked October 26, 2026 · Details & sources

Spatial accuracy limitation

Spatial errors - The areas depicted by these maps/data are approximate, and are not necessarily accurate to surveying or engineering standards. X/Y coordinates may be in error by several hundred feet or more.

Official information checked October 26, 2026 · Details & sources

Full guide, contact details & sources →
Kern1 guide
Kings1 guide
Lake1 guide
Lassen1 guide
Los Angeles1 guide
Madera1 guide
Marin1 guide
Mariposa1 guide
County government · Mariposa

Assessor-Recorder

Assessor

APN Map Viewer (opens in a new tab)
GIS (Mapping) (opens in a new tab)
Zoning lookup resource

Public Zoning Lookup Tool - GIS dashboard useful for determining the zoning for a parcel and learning about the permitted uses for each zone type.

Official information checked October 26, 2026 · Details & sources

Assessor map-page viewer

APN Map Page Viewer -- search for, save, and print the current Assessor's Parcel Map page for a parcel of interest.

Official information checked October 26, 2026 · Details & sources

Full guide, contact details & sources →
Mendocino1 guide
Merced1 guide
Modoc1 guide
Mono1 guide
Monterey1 guide
Napa1 guide
County government · Napa

Assessor

Serves Napa County, California. Use the official service instructions to confirm jurisdiction and appointment requirements.

Assessor Parcel Maps - Subscription Only (opens in a new tab)
Subscription access and separate map charges

Map Subscriptions: Subscriptions for online access to filed maps and assessor parcel maps are also available for customers regularly needing filed or assessor maps. The charge for maps is the same by subscription but you can download the maps directly and be charged automatically. Please complete an Online Map Access Sign-Up application.

Official information checked October 26, 2026 · Details & sources

Geographic Information Systems (GIS) (opens in a new tab)
Full guide, contact details & sources →
Nevada1 guide
Orange2 guides
Placer1 guide
Plumas1 guide
Riverside1 guide
Sacramento2 guides
County government · Sacramento

Community Development — Building Permits & Inspection

Sacramento County building permit services. Confirm which county or city agency handles your property before applying.

Interactive Zoning Map (opens in a new tab)
Incorporated-city jurisdiction

Contact the appropriate jurisdiction for questions regarding parcels within city boundaries.

Official information checked October 26, 2026 · Details & sources

Parcel-line and graphic limitations

The information and related graphics published on this site could include technical inaccuracies or typographical errors. Parcel lines may not accurately reflect legal descriptions. Changes are periodically added to the information herein. Furthermore, Sacramento County and/or its respective suppliers may make improvements and/or changes in the product(s) and/or the service(s) described herein at any time.

Official information checked October 26, 2026 · Details & sources

Full guide, contact details & sources →
San Benito1 guide
County government · San Benito

Assessor

Listed for San Benito County, California. The cited official directory identifies this office; task requirements and the availability of individual locations must be confirmed with the office.

Geographic Information Systems (GIS) (opens in a new tab)
County and listed city map resources

Welcome to the San Benito County GIS Web Portal. The web portal will allow you to interact with geographic data and create your own custom maps for the county of San Benito, Cities of Hollister and San Juan Bautista. We have information for landuse, zoning, general plan, fault lines, jurisdictions, polling places and more to come in the future.

Official information checked October 26, 2026 · Details & sources

Full guide, contact details & sources →
San Bernardino1 guide
San Diego1 guide
San Francisco1 guide
San Joaquin1 guide
San Luis Obispo1 guide
San Mateo2 guides
Santa Barbara1 guide
Santa Clara1 guide
Santa Cruz1 guide
Shasta1 guide
Sierra1 guide
Siskiyou1 guide
Solano1 guide
Sonoma2 guides
Stanislaus2 guides
Sutter1 guide
Tehama1 guide
Trinity1 guide
Tulare1 guide
Tuolumne2 guides
Ventura1 guide
Yolo1 guide
Yuba1 guide

Find county GIS and property maps by county