Sonoma County property record for 8420 Old Oak Rd, Windsor, CA 95492
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,044 sqft · built 1973 |
| Lot Size | 0.172 acres (7,500 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $845,000 (Feb 2025) |
| Tax Bill | $5,348 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 164-020-018-000 |
| Primary APN | 164-020-018-000 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 2,044 sqft Living Area |
| Gross Area | 2,462 sqft |
| 1st Floor Area | 2,044 sqft |
| Year Built | Built 1973 |
|---|---|
| Effective Year Built | Effective 1985 |
| Architectural Style | L-Shape |
| Construction Type | Wood |
| Lot Area | 7,500 sqft (0.172 acres) |
| Garage Type | Attached |
| Garage Area | 418 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | HVAC |
|---|
| Old Parcel Number | 164-020-018 |
|---|---|
| Street Address | 8420 OLD OAK RD |
| City | WINDSOR |
| State | CA |
| Zip | 95492-8986 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | CITYWI |
| Legal Description | 91 FM 66-330-23 # CHG PER MD PCL 4 PM 2522-A |
| Legal Subdivision | PARCEL MAP, 164-10 |
| Legal Block | 1 |
| Jurisdiction | SONOMA CA |
| Township / Civil Division | HEALDSBURG |
| Census Block Group | 1 |
| Census Block | 1008 |
| Census Tract | 153808 |
8420 Old Oak Rd is owned and occupied by two individuals who bought it in February 2025.
Source: Sonoma County records, as of September 1, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 8420 OLD OAK RD, WINDSOR, CA 95492-8986 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Feb 14, 2025 · Amount on File |
| Deed Sale | Feb 14, 2025 · Amount on File |
| Prior Sale | Aug 28, 2012 · Amount on File |
| Deed Document Number | 20256722 |
| Prior Transfer Date | Jun 17, 2008 |
| Prior Transfer Doc | 0000058926 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 8420 Old Oak Rd was $5,348.
Source: Sonoma County assessment roll, as of September 1, 2026
| Type | Name |
|---|---|
| State | California |
| County | Sonoma County |
| Municipality | Windsor Town |
| Unified School District | Windsor Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $396,389 (-7.76%) Land $150,113 Building $246,276 | |
| 2025 | $5,348.00 | $429,756 Land $147,765 Building $281,991 |
| 2023 | $5,132.00 (+1.81%) | $413,070 Land $142,028 Building $271,042 |
| 2022 | $5,041.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 8420 Old Oak Rd in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective February 15, 2026 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 10 (0% premium discount) |
| Nearby Flood Policies | 8 in force |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Wildfire risk around 8420 Old Oak Rd is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 97% of the US · lower than 97.8% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | Direct burnable vegetation |
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 | TOWN OF WINDSOR serves 25,561 people · EPA ID CA4910017 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Aug 2022 |
| Lead | Under 1 ppb (2023–2025) 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 278 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: GeoLinks, Verizon.
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