All states
California
23 layers of parcels and buildings, each tested with our export code. The national base map (roads, water, buildings) is offered everywhere too.
Open the map| Area | Layers | Checked | Map |
|---|---|---|---|
| Alameda County | Parcels | 3 Nov 2026 | Map |
| Contra Costa County | Parcels | 3 Nov 2026 | Map |
| Fresno County | Parcels | 3 Nov 2026 | Map |
| Los Angeles County | ParcelsBuildingsBuildings | 10 Nov 2026 | Map |
| Marin County | Parcels | 3 Nov 2026 | Map |
| Monterey County | Parcels | 3 Nov 2026 | Map |
| Orange County | ParcelsBuildings | 3 Nov 2026 | Map |
| Placer County | Parcels | 3 Nov 2026 | Map |
| Riverside County | Parcels | 3 Nov 2026 | Map |
| Sacramento County | Parcels | 3 Nov 2026 | Map |
| San Bernardino County | Parcels | 3 Nov 2026 | Map |
| San Diego County | Parcels | 3 Nov 2026 | Map |
| San Francisco County | ParcelsBuildings | 3 Nov 2026 | Map |
| San Joaquin County | Parcels | 3 Nov 2026 | Map |
| Santa Barbara County | Parcels | 3 Nov 2026 | Map |
| Santa Clara County | ParcelsBuildings | 3 Nov 2026 | Map |
| Sonoma County | Parcels | 3 Nov 2026 | Map |
| Ventura County | Parcels | 3 Nov 2026 | Map |
Terms, checks and service URLs for every layer
Alameda County
ParcelsChecked 3 Nov 2026
- What it is
- Alameda County Parcel Boundaries. Parcel boundaries with current Assessor roll attributes, maintained by Alameda County ITD. Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- Alameda County Information Technology Department (ArcGIS Online org AlamedaCounty.CA.US)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 53 features. See it on the map
- Terms
- County of Alameda standard disclaimer: dynamic data, not a legal survey, no warranty, County not liable for use. Public county open data, no token.
- Layer URL
Contra Costa County
ParcelsChecked 3 Nov 2026
- What it is
- Contra Costa County Assessment Parcels (CCMAP). CCMAP public parcel layer with current Assessor roll attributes. Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- Contra Costa County Department of Information Technology GIS (gis.cccounty.us)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 104 features. See it on the map
- Terms
- Contra Costa County: for informational purposes only; parcel boundaries are approximate and not a legal survey; verify with the County Assessor. Public, no token.
- Layer URL
Fresno County
ParcelsChecked 3 Nov 2026
- What it is
- Fresno County Parcels (County GIS hosted layer). County GIS hosted parcel layer (roll_year field is mostly blank or placeholder). Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- County of Fresno GIS (gisprod10.co.fresno.ca.us, item 'Parcels' on the county portal gisportal.co.fresno.ca.us)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 22 features. See it on the map
- Terms
- Public item on the County of Fresno GIS portal with no license or use-limitation text attached; the county states it does not publish ownership information online. No token.
- Layer URL
Los Angeles County
ParcelsChecked 10 Nov 2026
- What it is
- Los Angeles County Assessor parcels. Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- Los Angeles County Office of the Assessor
- Checked
- Fetched by our export code on a ~300 m test site on 10 November 2026: 91 features. See it on the map
- Terms
- "Los Angeles County Office of the Assessor" … "you are granted a license to copy, publish, distribute and/or transmit the Data, to adapt the Data and to exploit the Data for commercial and/or personal use" — County of Los Angeles eGIS Terms of Use, which its building-outline items extend to data from any LA County REST URL. Publicly served, no token (checked 2026-11-10).
- Layer URL
Building footprintsChecked 3 Nov 2026
- What it is
- City of Los Angeles Building Footprints. LARIAC stereo capture: 2008 (LARIAC2), updated with 2014 (LARIAC4) imagery; LARIAC_DATE per building
- Publisher
- City of Los Angeles GeoHub
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 58 features. See it on the map
- Terms
- Public, no token. City of LA GeoHub item carries no license or use-limitation text. Data originates from LA County's LARIAC program.
- Layer URL
Building footprintsChecked 10 Nov 2026
- What it is
- LARIAC countywide building outlines (2020)
- Publisher
- County of Los Angeles (LARIAC)
- Checked
- Fetched by our export code on a ~300 m test site on 10 November 2026: 23 features. See it on the map
- Terms
- "LARIAC, County of Los Angeles, Pictometry, EagleView" … "you are granted a license to copy, publish, distribute and/or transmit the Data, to adapt the Data and to exploit the Data for commercial and/or personal use" — Item credit, and the County of Los Angeles eGIS Terms of Use its licence points to. Publicly served, no token (checked 2026-11-10).
- Layer URL
Marin County
ParcelsChecked 3 Nov 2026
- What it is
- Marin County Parcels (MarinMap BaseMap). County parcel geometry updated monthly (4th Monday) with unsecured-roll attributes. Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- County of Marin GIS / MarinMap (gis.marinpublic.com), geometry from the Marin County Assessor
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 2 features. See it on the map
- Terms
- Marin County GIS disclaimer: as-is, no warranty, not survey precise, county assumes no liability; users asked to report errors to GISProjects@marincounty.gov. Public, no token.
- Layer URL
Monterey County
ParcelsChecked 3 Nov 2026
- What it is
- Monterey County Parcels (Land Records). County GIS parcel layer with Assessor attributes and land-use overlays (Last_Modified per record). Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- County of Monterey Information Technology GIS (maps.co.monterey.ca.us)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 68 features. See it on the map
- Terms
- County of Monterey GIS disclaimer: provided AS IS, no warranties; GIS data will be inconsistent with the official assessment roll; use at user's own risk. Public, no token.
- Layer URL
Orange County
ParcelsChecked 3 Nov 2026
- What it is
- Orange County Parcels With Attributes (OC Public Works open data). Updated nightly from the OC Survey landbase and Assessor roll. Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- OC Public Works / OC Survey Geospatial Services (ocgis.com), listed on the OCPW open data hub as 'Parcels With Attributes'
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 39 features. See it on the map
- Terms
- OCPW open data item 'Parcels With Attributes', described as public parcel attribute data; no license text or agreement attached. Publicly served, no token.
- Layer URL
Building footprintsChecked 3 Nov 2026
- What it is
- Orange County Building Footprints. Derived from 2011 USGS LiDAR
- Publisher
- OC Public Works / OC Survey (ocgis.com)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 24 features. See it on the map
- Terms
- CC0 (per the OC open data item). Public, no token.
- Layer URL
Placer County
ParcelsChecked 3 Nov 2026
- What it is
- Placer County Parcels Lite. Refreshed daily from the Assessor parcel database (ASR_Parcels SDE). Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- Placer County GIS Services (ArcGIS Online org PlacerGISServices), from the Assessor parcel SDE
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 16 features. See it on the map
- Terms
- Placer County GIS layer terms of use: PUBLIC. No license text beyond that; no token.
- Layer URL
Riverside County
ParcelsChecked 3 Nov 2026
- What it is
- Riverside County Parcels CREST (Assessor parcels with roll attributes). Replicated from the Assessor CountyGIS geodatabase, updated daily Monday through Friday. Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- Riverside County Information Technology (RCIT) GIS, data from the County Assessor
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 48 features. See it on the map
- Terms
- Riverside County Open Data item 'Parcels CREST' (GISOpenData@rivco.org), license: Public Use. Copyright Riverside County Assessor / RCIT. No token.
- Layer URL
Sacramento County
ParcelsChecked 3 Nov 2026
- What it is
- Sacramento County Parcel Boundaries (Assessor/GIS). Current GIS parcel base joined to the Assessor roll (LAST_ROLL_YEAR 2026 on test date). Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- Sacramento County Department of Technology GIS (mapservices.gis.saccounty.gov)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 26 features. See it on the map
- Terms
- County GIS service with no terms text on the layer; Sacramento County publishes its parcel open data (data.saccounty.gov) under a Creative Commons Public Domain Dedication. Public, no token.
- Layer URL
San Bernardino County
ParcelsChecked 3 Nov 2026
- What it is
- San Bernardino County Parcels (owner name redacted). County-hosted parcel layer with assessment and zoning attributes (refreshed by the county). Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- County of San Bernardino (ArcGIS Online org County_Of_San_Bernardino / SBCo GIS); maintained by Land Use Services, Surveyor and Assessor
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 23 features. See it on the map
- Terms
- San Bernardino County standard disclaimer: no warranty of accuracy, timeliness or completeness; county assumes no liability. Public county open data, no token.
- Layer URL
San Diego County
ParcelsChecked 3 Nov 2026
- What it is
- San Diego County Assessor Parcels (public-use, redacted). PARCELS_ALL redacted for public use (SanGIS regional warehouse, refreshed regularly). Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- County of San Diego (gis-public.sandiegocounty.gov), data from SanGIS / County Assessor
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 205 features. See it on the map
- Terms
- Copyright SanGIS, County of San Diego Assessor. Covered by the SanGIS GIS Data End User Use Agreement and Disclaimer (as-is, no warranty, indemnify SanGIS; redistribution discouraged but not prohibited; altered data must be cited as derived from SanGIS, e.g. 'GIS data derived from SanGIS'). Publicly served, no token or click-through.
- Note
- Coverage is the extent the publisher declares; the layer was too large to measure.
- Layer URL
San Francisco County
ParcelsChecked 3 Nov 2026
- What it is
- San Francisco Active Parcels (DataSF, pulled daily). Pushed to ArcGIS Online daily by SFGIS from DataSF (Public Works recorded-parcel basemap since 1995). Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- City and County of San Francisco, SFGIS (ArcGIS Online org sfgov); source dataset DataSF acdm-wktn (Public Works basemap + Assessor roll)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 82 features. See it on the map
- Terms
- Open Data Commons Public Domain Dedication and License (PDDL 1.0). Public, no token.
- Layer URL
Building footprintsChecked 3 Nov 2026
- What it is
- San Francisco Building Footprints. Outlines collapsed from a 2010 Pictometry 3D building model; heights from 2010 LiDAR
- Publisher
- City and County of San Francisco (DataSF / SF GIS)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 64 features. See it on the map
- Terms
- Open Data Commons Public Domain Dedication and License (PDDL 1.0). Public, no token.
- Layer URL
San Joaquin County
ParcelsChecked 3 Nov 2026
- What it is
- San Joaquin County Parcels (Assessor tax parcels). Assessor tax parcel layer, updated 09/2026 per item description. Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- San Joaquin County Department of Public Works GIS (ArcGIS Online org SanJoaquinCountyPW); data from the County Assessor's Office
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 64 features. See it on the map
- Terms
- Copyright San Joaquin County Assessor's Office; public item from San Joaquin County Public Works with no license text attached. County assessor disclaimer (as quoted on copies of this layer): for tax assessment purposes, no warranty, not to be relied on for legal ownership or private real-property transactions. No token.
- Layer URL
Santa Barbara County
ParcelsChecked 3 Nov 2026
- What it is
- Santa Barbara County Assessor Parcels Public. Assessor parcel map layer with current roll attributes (RollYear field). Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- County of Santa Barbara (ArcGIS Online org COSB-ent), Clerk-Recorder-Assessor
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 72 features. See it on the map
- Terms
- County of Santa Barbara disclaimer: no liability for errors or omissions, no representations of accuracy; representational only, not for coordinate values, distances or bearings. Public, no token.
- Layer URL
Santa Clara County
ParcelsChecked 3 Nov 2026
- What it is
- Santa Clara County Parcels Public View. County land information parcel layer as of April 2026. Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- County of Santa Clara, Department of Planning and Development (ArcGIS Online org SCC.Planning.Office)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 24 features. See it on the map
- Terms
- Copyright County of Santa Clara. 'There are no Use Constraints'; informational only, no guarantees, County not liable. Public, no token.
- Layer URL
Building footprintsChecked 3 Nov 2026
- What it is
- City of San Jose Buildings. Roofline outlines digitized from the city's 2006 LiDAR survey; LASTUPDATE per building (Public Works maintains the layer)
- Publisher
- City of San Jose Public Works (Enterprise GIS)
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 19 features. See it on the map
- Terms
- Public, no token; copyright text 'City of San Jose - Public Works'. City GIS disclaimer: as-is, no warranty, use at your own risk. No license or indemnity text.
- Layer URL
Sonoma County
ParcelsChecked 3 Nov 2026
- What it is
- Sonoma County Parcels Public. Seamless parcel base digitized from Assessor Parcel Maps, published monthly. Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- County of Sonoma Clerk-Recorder-Assessor (owner) and ISD-GIS Central (steward), socogis.sonomacounty.ca.gov
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 5 features. See it on the map
- Terms
- CC BY-SA 3.0 US (per layer metadata): attribution 'County of Sonoma' required when distributing; share-alike for derived data; no warranty; not survey quality. Public, no token.
- Layer URL
Ventura County
ParcelsChecked 3 Nov 2026
- What it is
- Ventura County Parcels (County GIS open data, monthly). Parcel polygons refreshed monthly by Ventura County GIS. Assessor tax parcels, not legal boundaries or a survey.
- Publisher
- County of Ventura Information Technology Services GIS (ArcGIS Online org GISVentura), item 'Parcels Monthly'
- Checked
- Fetched by our export code on a ~300 m test site on 3 November 2026: 1 feature. See it on the map
- Terms
- County of Ventura GIS: reference use only, features approximate and not to survey/engineering standards, no warranty, County assumes no legal responsibility. Public, no token. (Assessor roll attributes are only released via a public-records request and info agreement, which is why this layer carries geometry and APN only.)
- Layer URL
“Checked” means fetched by our export code on a test site. How we check · Data credits. Most local layers were found through Basesheet's source list (Copyright (c) 2026 Hunter Hillman, MIT License), then re-checked by us.