Contra Costa County property record for 12 Mount Wilson Way, Clayton, CA 94517
| Property Type | Townhouse |
|---|---|
| Details | 2 bd · 2.5 ba · 1,378 sqft · built 1973 |
| Lot Size | 0.028 acres (1,200 sqft) |
| Owner | Company Name on Record |
| Tax Bill | $4,342 (2025) |
| Deeds & Mortgages | Sep 2025 Sale Sep 2025 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-231-006-6 |
| Primary APN | 119-231-006-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,378 sqft Living Area |
| 1st Floor Area | 784 sqft |
| 2nd Floor Area | 594 sqft |
| Year Built | Built 1973 |
|---|---|
| Effective Year Built | Effective 1976 |
| Architectural Style | Townhouse |
| Lot Area | 1,200 sqft (0.028 acres) |
| Garage Type | Attached |
| Garage Area | 430 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Street Address | 12 MT WILSON WAY |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1643 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | PUD |
| Legal Description | T04240 L0006 B |
| Legal Subdivision | MARSH CREEK |
| Legal Tract | 04240 |
| Legal Lot Number | 6 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4000 |
| 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 | Company Name on Record |
|---|---|
| Mailing Address | 967 AUTUMN OAK CIR, CONCORD, CA 94521-5434 |
| Owner Type | Company |
| Vesting | Limited Liability Partnership |
| Date | Document |
|---|---|
| Sep 22, 2025 | Grant Deed, Transfer |
| Sep 22, 2025 | Intrafamily Transfer, Transfer |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 31, 1998 |
| Deed Sale | Jul 31, 1998 |
| Prior Sale | Sep 27, 1996 · Amount on Record |
| Deed Document Number | 1998181471 |
| Last Transfer Date | Sep 16, 2025 |
| Transfer Doc | 0000098663 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 22, 2025 |
| Property Address | 12 MT WILSON WAY, CLAYTON, CA 94517-1643 |
| Document Number | 0000098664 |
| Map Reference | MB 153 PG 3 |
| Instrument Date | Sep 16, 2025 |
| Instrument | 2025- 098664 |
| Transaction Type | Transfer |
| Record Updated | Oct 2, 2025 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 967 AUTUMN OAK CIR, CONCORD, CA 94521-5434 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 22, 2025 |
| Property Address | 12 MT WILSON WAY, CLAYTON, CA 94517-1643 |
| Document Number | 0000098663 |
| Map Reference | MB 153 PG 3 |
| Instrument Date | Sep 16, 2025 |
| Instrument | 2025- 098663 |
| Transaction Type | Transfer |
| Record Updated | Oct 2, 2025 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 967 AUTUMN OAK CIR, CONCORD, CA 94521-5434 |
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 | $279,067 (+2%) Land $106,307 Building $172,760 | |
| 2025 | $4,342.00 (+5.29%) | $273,596 (+4.04%) Land $104,223 Building $169,373 |
| 2023 | $4,124.00 (+1.95%) | $262,974 Land $100,177 Building $162,797 |
| 2022 | $4,045.00 |
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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