Contra Costa County property record for 3 Mount Wilson Way, Clayton, CA 94517
| Property Type | Townhouse |
|---|---|
| Details | 2 bd · 2 ba · 966 sqft · built 1973 |
| Lot Size | 0.047 acres (2,025 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $325,000 (Nov 2003) |
| Tax Bill | $6,345 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-232-048-7 |
| Primary APN | 119-232-048-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 966 sqft Living Area |
| Gross Area | 1,400 sqft |
| 1st Floor Area | 966 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1973 |
|---|---|
| Effective Year Built | Effective 1976 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Tar & Gravel |
| Lot Area | 2,025 sqft (0.047 acres) |
| Garage Type | Attached |
| Garage Area | 434 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 3 MT WILSON WAY |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1642 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | PUD |
| Legal Description | T04240 L0108 B |
| Legal Subdivision | MARSH CREEK |
| Legal Tract | 04240 |
| Legal Lot Number | 108 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4002 |
| Census Tract | 355306 |
Source: Contra Costa County records, as of July 14, 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 | 3 MT WILSON WAY, CLAYTON, CA 94517-1642 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Nov 3, 2003 · Amount on Record |
| Deed Sale | Nov 3, 2003 · Amount on Record |
| Prior Sale | Nov 8, 2002 · Amount on Record |
| Deed Document Number | 2003542308 |
| Prior Transfer Date | Oct 7, 1993 |
| Prior Transfer Doc | 0000284936 |
| Record Updated | Oct 29, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Clayton City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $471,304 (+2%) Land $232,027 Building $239,277 | |
| 2025 | $6,345.00 (+4.88%) Homeowner's exemption | $462,064 (+4.04%) Land $227,478 Building $234,586 |
| 2023 | $6,050.00 (+1.63%) Homeowner's exemption | $444,124 Land $218,646 Building $225,478 |
| 2022 | $5,953.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective October 12, 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 |
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 | Moderate above 56% of the US · lower than 66% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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 420 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
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