Contra Costa County property record for 148 Mount Whitney Way, Clayton, CA 94517
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,177 sqft · built 1975 |
| Lot Size | 0.233 acres (10,165 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $815,000 (Sep 2020) |
| Tax Bill | $11,088 (2025) |
| Deeds & Mortgages | Aug 2026 Sale Sep 2020 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-381-006-4 |
| Primary APN | 119-381-006-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,177 sqft Living Area |
| 1st Floor Area | 1,221 sqft |
| 2nd Floor Area | 956 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1975 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Tile |
| Lot Area | 10,165 sqft (0.233 acres) |
| Lot Dimensions | 95 ft deep x 107 ft wide |
| Garage Type | Attached |
| Garage Area | 495 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 148 MT WHITNEY WAY |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1541 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | TRACT 4014 LOT 25 EX MR |
| Legal Subdivision | 4014 |
| Legal Tract | 4014 |
| Legal Lot Number | 25 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4006 |
| Census Tract | 355306 |
Source: Contra Costa County records, as of August 11, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 148 MT WHITNEY WAY, CLAYTON, CA 94517-1541 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
| Date | Document |
|---|---|
| Aug 5, 2026 | Grant Deed, Transfer NONE LISTED ON DOCUMENT |
| Sep 4, 2020 | Grant Deed, Transfer · Conventional Mortgage SUMMIT FUNDING INC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 4, 2020 · Amount on Record |
| Deed Sale | Sep 4, 2020 · Amount on Record |
| Deed Document Number | 2020194797 |
| Last Transfer Date | Jul 29, 2026 |
| Transfer Doc | 0000082027 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 5, 2026 |
| Property Address | 148 MT WHITNEY WAY, CLAYTON, CA 94517-1541 |
| Document Number | 0000082027 |
| Instrument Date | Jul 29, 2026 |
| Instrument | 202682027 |
| Transaction Type | Transfer |
| Record Updated | Aug 11, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Full Amount Stated |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 148 MT WHITNEY WAY, CLAYTON, CA 94517-1541 |
| Investor | Possibly a Property Investor |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 4, 2020 |
| Property Address | 148 MT WHITNEY WAY, CLAYTON, CA 94517-1541 |
| Document Number | 0000194797 |
| Map Reference | MB 177 PG 35 |
| Instrument Date | Aug 17, 2020 |
| Instrument | 2020-194797 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | CHICAGO TITLE COMPANY |
| 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 | 148 MT WHITNEY WAY, CLAYTON, CA 94517-1541 |
| Document Number | 0000194798 |
|---|---|
| Date | Sep 4, 2020 |
| Instrument | 2020-194798 |
| Name | SUMMIT FUNDING INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Oct 1, 2050 |
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 | $899,824 (+2%) Land $552,040 Building $347,784 | |
| 2025 | $11,088.00 (+4.37%) | $882,181 (+4.04%) Land $541,216 Building $340,965 |
| 2023 | $10,624.00 (+1.27%) | $847,926 Land $520,200 Building $327,726 |
| 2022 | $10,491.00 |
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 |
|---|---|
| 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 64% of the US · lower than 60% of California |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Indirect 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 | 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 |
Search by:
By searching, you agree to: Terms • Privacy • Disclosures