How accurate are the Property (Parcel) boundaries shown in the web maps?

The accuracy of parcel boundaries varies considerably, with errors  ranging from 10s, and even 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.

Show All Answers

1. How do I find the Assessor's Parcel Map for my property?
2. How do I view topo (USGS quad) maps and aerial photos?
3. Why can't I view owner name in the digital data download or on My Neighborhood?
4. How can I access a parcel map or parcel report?
5. Where can I download GIS data?
6. Where can I find maps in PDF format?
7. Where can I find recorded maps?
8. Can the GIS Division make a map / do analysis for me?
9. How accurate are the Property (Parcel) boundaries shown in the web maps?
10. What if my address is missing or incorrect in the My Neighborhood Map Portal?
11. How can I generate a mailing list for owner mailing address or for site addresses?