Sonoma County property record for 79 William St, Apt O, Cotati, CA 94931
| Property Type | Condominium |
|---|---|
| Details | 2 bd · 1.5 ba · 1,250 sqft · built 1980 |
| Lot Size | 0.014 acres (1 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $450,000 (Jun 2021) |
| Tax Bill | $6,019 (2025) |
| Deeds & Mortgages | Jun 2021 Sale |
| Flood Zone | Zone X (moderate risk) |
| APN | 144-560-015-000 |
| Primary APN | 144-560-015-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 2 Rooms |
| Stories | 2 Stories |
| Building Area | 1,250 sqft Living Area |
| 1st Floor Area | 600 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1980 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Custom Design |
| Construction Type | Wood |
| Lot Area | 1 sqft (0.014 acres) |
| Garage Type | Carport |
| Garage Area | 200 sqft |
| Carport | Carport |
| Carport Area | 200 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | HVAC |
|---|
| Old Parcel Number | 144-560-015 |
|---|---|
| Street Address | 79 WILLIAM ST, O |
| City | COTATI |
| State | CA |
| Zip | 94931-5213 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Local Zoning Code | CITYCO |
| Legal Description | UNIT 15 WILLIAM STREET CONDOS |
| Legal Subdivision | WILLIAM STREET CONDO |
| Legal Block | 3 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | PETALUMA |
| Census Block Group | 3 |
| Census Block | 3002 |
| Census Tract | 151204 |
Source: Sonoma County records, as of May 6, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 79 WILLIAM ST, O, COTATI, CA 94931-5213 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 1, 2021 · Amount on Record |
| Deed Sale | Jun 1, 2021 · Amount on Record |
| Prior Sale | Sep 15, 2000 · Amount on Record |
| Deed Document Number | 202165204 |
| Prior Transfer Date | Jul 24, 2015 |
| Prior Transfer Doc | 0000068134 |
| Record Updated | Jun 8, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | SONOMA CA |
| Recording Date | Jun 1, 2021 |
| Property Address | 79 WILLIAM ST APT O, O, COTATI, CA 94931-5213 |
| Document Number | 0000065204 |
| Map Reference | DOC 800036555 |
| Instrument Date | May 25, 2021 |
| Instrument | 2021065204 |
| Transaction Type | Transfer |
| Record Updated | Jun 17, 2021 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Amount | Amount Recorded |
|---|---|
| Tax | $495.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 538 VISTA GRANDE, NEWPORT BEACH, CA 92660-4006 |
Source: Sonoma County assessment roll, as of April 13, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Municipality | Cotati City |
| Unified School District | Cotati-Rohnert Park Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $6,019.00 (+2.99%) | $487,093 (+4.04%) Land $194,837 Building $292,256 |
| 2023 | $5,844.00 (+1.78%) | $468,180 Land $187,272 Building $280,908 |
| 2022 | $5,742.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective February 15, 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CITY OF COTATI serves 7,290 people · EPA ID CA4910016 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Aug 2024 |
| Lead | Under 1 ppb (2024–2026) action level 15 ppb |
| Water Quality | None last 10 years |
|---|---|
| Treatment and Procedure | None last 10 years |
| Monitoring and Reporting | None last 3 years |
Results are for the whole water system, not water tested at this address; lead at the tap also depends on the building's own pipes.
Source: FCC Broadband Data Collection, based on 553 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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