Contra Costa County property record for 203 Mount Wilson Pl, Clayton, CA 94517
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 2,692 sqft · built 1976 |
| Lot Size | 0.276 acres (12,000 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $1,222,000 (Sep 2024) |
| Tax Bill | $14,835 (2025) |
| Deeds & Mortgages | Mar 2023 Second Mortgage Apr 2021 Mortgage + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-412-001-8 |
| Primary APN | 119-412-001-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 2,692 sqft Living Area |
| Gross Area | 3,329 sqft |
| 1st Floor Area | 1,499 sqft |
| 2nd Floor Area | 1,193 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1976 |
|---|---|
| Effective Year Built | Effective 1992 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 12,000 sqft (0.276 acres) |
| Garage Type | Attached |
| Garage Area | 637 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 203 MT WILSON PL |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1641 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TRACT 4016 LOT 3 EX MR |
| Legal Subdivision | SUBDIVISION 4016 |
| Legal Tract | 4016 |
| Legal Lot Number | 3 |
| 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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 203 MT WILSON PL, CLAYTON, CA 94517-1641 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Mar 13, 2023 | Deed of Trust, Mortgage · Stand-Alone Second Mortgage TRAVIS COUNTY CU |
| Apr 22, 2021 | Deed of Trust, Mortgage · Conventional Mortgage AMERICAN PACIFIC MORTGAGE CORP |
| Jul 19, 2019 | Grant Deed, Transfer · Conventional Mortgage MIDWEST EQUITY MORTGAGE LLC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 10, 2024 · Amount on Record |
| Deed Sale | Sep 10, 2024 · Amount on Record |
| Prior Sale | Jul 19, 2019 · Amount on Record |
| Deed Document Number | 202488879 |
| Prior Transfer Date | Mar 25, 2012 |
| Prior Transfer Doc | 0000071301 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 203 MT WILSON PL, CLAYTON, CA 94517-1641 |
| Transaction Type | Mortgage |
| Record Updated | Mar 21, 2023 |
| Title Company | ACCOMODATION, ACCOMMODATION |
| Name | Verified Name |
|---|---|
| Address | 203 MT WILSON PL, CLAYTON, CA 94517-1641 |
| Document Number | 0000023440 |
|---|---|
| Date | Mar 13, 2023 |
| Instrument | 2023-023440 |
| Name | TRAVIS COUNTY CU |
|---|---|
| Type | Credit Union |
| Address | VACAVILLE, CA 95687 |
| Type | Stand-Alone Second Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 181 Months |
| Due | Apr 1, 2038 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 203 MT WILSON PL, CLAYTON, CA 94517-1641 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | FIDELITY NATIONAL TITLE |
| Name | Verified Name |
|---|---|
| Address | 203 MT WILSON PL, CLAYTON, CA 94517-1641 |
| Document Number | 0000120665 |
|---|---|
| Date | Apr 22, 2021 |
| Instrument | 2021-120665 |
| Name | AMERICAN PACIFIC MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Address | ROSEVILLE, CA 95661 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 181 Months |
| Due | May 1, 2036 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 19, 2019 |
| Property Address | 203 MT WILSON PL, CLAYTON, CA 94517-1641 |
| Document Number | 0000112494 |
| Map Reference | MB 183 PG 11 |
| Instrument Date | Jul 16, 2019 |
| Instrument | 2019-112494 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | FIDELITY NATIONAL TITLE CO |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 203 MT WILSON PL, CLAYTON, CA 94517-1641 |
| Document Number | 0000112495 |
|---|---|
| Date | Jul 19, 2019 |
| Instrument | 2019-112495 |
| Name | MIDWEST EQUITY MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Aug 1, 2049 |
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 | $1,246,440 (+2%) Land $622,200 Building $624,240 | |
| 2025 | $14,835.00 (+24.45%) | $1,222,000 (+25.68%) Land $610,000 Building $612,000 |
| 2023 | $11,920.00 (+1.24%) Homeowner's exemption | $972,339 Land $473,030 Building $499,309 |
| 2022 | $11,774.00 |
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 | High above 75% of the US · above 50% of California |
|---|---|
| Wildfire Likelihood | 0.4% 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 | 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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