ParcelioContra Costa County, California: parcel data and property records
398,460 Contra Costa County parcels on one searchable map: owner of record and mailing address, assessed and appraised values and recorded sales, plus lot boundaries and location. Screen by absentee ownership, acreage, year built and owner tenure.
What the data covers
These bars show real field-by-field coverage for Contra Costa County in our database, so you know exactly what you are getting before you search. Numbers refresh as the county publishes new records.
Not held for Contra Costa County: vacancy. Those fields are carried where the county publishes them.
Most recent recorded sale on file: 2026-08-04.
Areas covered
Parcel counts by place, largest first: Walnut Creek (39,469), Concord (39,117), Antioch (35,185), Richmond (34,887), San Ramon (27,184).
Recent sales
16,106 Contra Costa County parcels have a recorded sale dated since November 2025. Only 0 of them carry a price, too few to summarize.
Land use mix
The most common land use or property class on file, as the county writes it, by share of parcels with one: Single Family, 1 residence on 1 site, with or without 59%, Single Family detached with major common area such as pool, tennis, clubhouse, or other amenities, Cluster Homes 12%, Condominiums and Cooperatives (Includes Commercial and Industrial Condominiums) 8%, Townhouses, Attached PUDs, Duets 6%, Single Family on other than single family land 2%.
Nearest counties
- Alameda County: about 16 mi away, 471,262 parcels
- Solano County: about 26 mi away, 153,148 parcels
- San Francisco County: about 26 mi away, 227,549 parcels
- San Mateo County: about 39 mi away, 225,059 parcels
- Marin County: about 40 mi away, 96,260 parcels
Search Contra Costa County parcels
The map is free to browse - parcel lines, boundaries, and location. Owner of record, assessed values, recorded sales, year built and the full parcel report come with a plan that costs less than one hour of a title runner's time.
Explore the Contra Costa County map See plans
Common questions
How many parcels are in Contra Costa County, California?
Parcelio carries 398,460 parcel records for Contra Costa County, California, with owner information on 95 percent of them.
Can I find out who owns a property in Contra Costa County?
Yes. Search by owner name, address, or parcel number to pull the record: owner of record and mailing address, assessed values, recorded sales, year built and lot lines on the map. Sale records here currently run through 2026-08-04.
How do I find vacant land or absentee owners in Contra Costa County?
We do not hold vacancy data for Contra Costa County yet, so this filter has nothing to match there. Vacancy filters work in the counties where we hold the field. Contra Costa County does have owner mailing state: 894 parcels have an owner mailing address outside California.
Can I search Contra Costa County by lot size or acreage?
Yes. Acreage is on 88 percent of Contra Costa County parcels, mapped from the parcel boundary, and the advanced search filters on it directly - set a minimum and maximum to pull every tract in that range, then stack vacancy or absentee ownership on top.