ParcelioSonoma County, California: parcel data and property records
189,457 Sonoma 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 Sonoma 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 Sonoma County: vacancy. Those fields are carried where the county publishes them.
Most recent recorded sale on file: 2026-09-30.
Areas covered
Parcel counts by place, largest first: Santa Rosa (69,827), Petaluma (24,533), Sonoma (13,812), Rohnert Park (12,891), Sebastopol (11,021).
Recent sales
3,142 Sonoma County parcels have a recorded sale dated since November 2025. Across 2,794 priced sales, with a deed recorded on several parcels counted once, the median price was $800,000 and the middle half sold between $615,000 and $1,150,000.
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 Dwelling 50%, Rural Res/Single Res 10%, Attached Unit 4%, Condominium Unit 4%, Detached Unit In A Pud 2%.
Nearest counties
- Marin County: about 32 mi away, 96,260 parcels
- Napa County: about 32 mi away, 51,992 parcels
- Lake County: about 46 mi away, 65,295 parcels
- Solano County: about 53 mi away, 153,148 parcels
- Yolo County: about 54 mi away, 67,993 parcels
Search Sonoma 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 Sonoma County map See plans
Common questions
How many parcels are in Sonoma County, California?
Parcelio carries 189,457 parcel records for Sonoma County, California, with owner information on 99 percent of them.
Can I find out who owns a property in Sonoma 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 2026-09-30.
How do I find vacant land or absentee owners in Sonoma County?
We do not hold vacancy data for Sonoma County yet, so this filter has nothing to match there. Vacancy filters work in the counties where we hold the field. Sonoma County does have owner mailing state: 2,189 parcels have an owner mailing address outside California.
Can I search Sonoma County by lot size or acreage?
Yes. Acreage is on 99 percent of Sonoma 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.