Location guide · Contra Costa County, CA
Find a property owner in Contra Costa County, California
Contra Costa County takes in Martinez and the surrounding area. In California, deeds are recorded by the county recorder, and property is assessed by the county assessor. Those offices give you the owner of record and mailing address one parcel at a time; for a whole list, an owner-data tool returns owners, phones (DNC flagged) and emails in one pass.
What's on a Contra Costa County property record
- The recorded owner name (person or LLC)
- The mailing address (often different from the property location for absentee owners)
- Assessed value and tax history
- Property characteristics (lot size, year built where applicable, square footage)
- A link to the recorded deed in most counties
Working Contra Costa County records
For a farm or expired list, pull the parcel numbers first. Parcel IDs stay stable when an address is written differently, so they make cleaner matches than street addresses.
Common questions
How do I find the owner of a property in Contra Costa County?
The Contra Costa County property appraiser or assessor website publishes the recorded owner name and mailing address for every property in the county at no charge. For a list of addresses, an owner-data tool resolves each one directly to the verified owner with phones (DNC flagged) and emails.
Where do I find Contra Costa County property records?
Assessment and owner-of-record data come from the county assessor; recorded deeds, mortgages and liens are with the county recorder. Most Contra Costa County offices offer an online search by address or parcel number.
Is it legal to look up property owners in Contra Costa County?
Public records in California are open to anyone, so the lookup itself is fine. Before you call, remove Do Not Call numbers and make sure texts comply with the TCPA. Some states add their own telemarketing rules on top.