Contra Costa County property record for 308 Mount Sierra Pl, Clayton, CA 94517 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,177 sqft · built 1979 |
| Lot Size | 0.23 acres (10,000 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,160,000 (Jun 2021) |
| Tax Bill | $14,397 (2025) |
| Deeds & Mortgages | Jun 2021 Sale Apr 2019 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 119-510-014-2 |
| Primary APN | 119-510-014-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| 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 |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Cluster |
| Lot Area | 10,000 sqft (0.23 acres) |
| Garage Type | Attached |
| Garage Area | 495 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 308 MT SIERRA PL |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-1616 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T04018 L0014 B EX MR |
| Legal Subdivision | SUBDIVISION 4018 |
| Legal Tract | 04018 |
| Legal Lot Number | 14 |
| 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 · APN 119-510-014-2
Assessment roll updated July 14, 2026 · Last verified July 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 File |
|---|---|
| Mailing Address | 308 MT SIERRA PL, CLAYTON, CA 94517-1616 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Date | Document |
|---|---|
| Jun 28, 2021 | Grant Deed, Transfer PLACER TITLE COMPANY |
| Apr 18, 2019 | Deed of Trust, Mortgage · Line of Credit BANK OF AMERICA |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jun 28, 2021 · Amount on Record |
| Deed Sale | Jun 28, 2021 · Amount on Record |
| Prior Sale | Nov 16, 2009 · Amount on Record |
| Deed Document Number | 2021184798 |
| Prior Transfer Date | Jun 21, 2013 |
| Prior Transfer Doc | 0000167159 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jun 28, 2021 |
| Property Address | 308 MT SIERRA PL, CLAYTON, CA 94517-1616 |
| Document Number | 0000184798 |
| Map Reference | MB 195 PG 31 |
| Instrument Date | Jun 13, 2021 |
| Instrument | 2021-184798 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Title Company | PLACER TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Community Property with Right of Survivorship |
| Address | 308 MT SLERRA PLACE, CLAYTON, CA 94517-1616 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 308 MT SIERRA PL, CLAYTON, CA 94517-1616 |
| Document Number | 0000084134 |
| Instrument Date | Apr 18, 2019 |
| Transaction Type | Mortgage |
| Record Updated | Jun 17, 2019 |
| Title Company | TITLE 365 |
| Name | Verified Name |
|---|---|
| Address | 308 MT SIERRA PL CLAYTON CA 945171616, CLAYTON, CA 94517-1616 |
| Document Number | 0000084134 |
|---|---|
| Date | Jun 06, 2019 |
| Instrument | 84134 |
| Name | BANK OF AMERICA |
|---|---|
| Type | Bank |
| Address | TAMPA, FL 33634 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Clayton City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,151,000 (-3.2%) Land $754,104 Building $396,896 | |
| 2025 | $14,397.00 (+6.81%) Homeowner's exemption | $1,189,000 (+6.83%) Land $779,000 Building $410,000 |
| 2023 | $13,479.00 (-6.06%) Homeowner's exemption | $1,113,000 Land $729,000 Building $384,000 |
| 2022 | $14,349.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Wildfire Risk | High above 86% of the US · above 66% of California |
|---|---|
| Wildfire Likelihood | About 1 in 124 per year |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 86 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| Unwired | Fixed Wireless | 300 / 25 |
| Verizon | Fixed Wireless | 300 / 20 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
Availability varies by address; speeds are provider-advertised maximums, not measured.
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