Frequently Asked Questions

You can use our My Neighborhood Mapping Application. Use the Parcel Search tool which opens on startup to search for a parcel.  In the results list, click on the blue report link.  This opens the Parcel Report. On this report, you will find a 'view Assessor Parcel Map' link.  Alternatively, you can navigate directly to the parcel report and search for a parcel by APN, or by clicking on the map.

You can use our My Neighborhood Mapping Application. Click on the basemaps tools widget in the upper right toolbar, and choose the appropriate basemap.

If you need owner names, we have public kiosks in the Assessor office lobby at 950 Maidu Avenue, from which you can search by name, site address, or Assessor's parcel number.

The GIS Division has been instructed not to distribute owner name to any entity, public or private.  Email the Assessor's Office for more information regarding ownership information.  Owner mailing address is available both in the data download and when exporting addresses from the My Neighborhood Mapping Application.

Operative January 1, 2025, Assembly Bill 1785 (Stats. 2024, ch. 551) amends Government Code section 7928.205 and extends the state or local agency prohibition from publicly posting on the internet the home address and telephone number of any elected or appointed official to include both the name and assessor parcel number associated with the home address. This bill also defines "publicly post" to mean intentionally communicate or otherwise make available on the internet in an unrestricted and publicly available manner. 

Using the My Neighborhood Mapping Application, search for a parcel, then click the Report link in the search results. This will provide information about elected officials, valuation, districts, building permits and much more.

See the Open Data Portal.

See our map collection.

You can determine if a Recorded Map or Subdivision map exists for your  parcel by using the corresponding search option on the My Neighborhood  Mapping Application search tool. The results will also tell you the map  number and a link to the Recorder's page where you can order the map. You can also search for a known document at the following recorder site or contact the Recorders office for assistance at 530-265-1221.

Please use one of our service providers. You can read about them on our Mapping Service Providers page.

The accuracy of parcel boundaries varies considerably, with errors ranging from just a few feet to 150 feet in some areas.  Parcel boundaries  were adapted from Assessor Department CAD drawings, and then rubber sheeted to form a seamless layer for the whole county.  There is no  substitute for using a licensed surveyor to locate your property  corners.  Should you be lucky enough to locate a monumented property  corner, you could use the metes-and-bounds on the Assessor's Parcel Map (see question Number 1) to approximate the boundaries and remaining  corners. 

Please don't attempt to use the My Neighborhood Latitude/Longitude tool and a GPS device to locate a property corner, as  both of these tools will introduce significant error.

Please note the APN (Assessor’s Parcel Number) and export the map as a .jpeg or take a screenshot.  Send this with a description of the error to our email and we can forward it to the Planning Department for update.

You can use the Parcel Notification tool on the My Neighborhood mapping  application to search for a parcel, buffer it, or select a series of  parcels.  Next, in the attribute table that opens at the bottom of the  application, choose Options, and then choose Export to CSV.  Please see the help in the application or view the video on this interactive map page for detailed instructions.