Contra Costa County property record for 1010 Stone Valley Rd, Alamo, CA 94507
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,296 sqft · built 1958 |
| Lot Size | 0.5 acres (21,780 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $1,165,000 (Mar 2010) |
| Tax Bill | $17,255 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 192-134-013-7 |
| Primary APN | 192-134-013-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 2,296 sqft Living Area |
| Gross Area | 2,813 sqft |
| 1st Floor Area | 2,296 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1958 |
|---|---|
| Effective Year Built | Effective 1989 |
| Architectural Style | Ranch |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 21,780 sqft (0.5 acres) |
| Garage Type | Attached |
| Garage Area | 517 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Septic |
| Water Source | Commercial |
| Street Address | 1010 STONE VALLEY RD |
|---|---|
| City | ALAMO |
| State | CA |
| Zip | 94507-2024 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | POR RO SAN RAMON |
| Legal Subdivision | A W STONE RANCH |
| Legal Lot Number | F |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 346102 |
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 Company Names on Record |
|---|---|
| Mailing Address | 1010 STONE VALLEY RD, ALAMO, CA 94507-2024 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Mar 4, 2010 · Amount on Record |
| Deed Sale | Mar 4, 2010 · Amount on Record |
| Prior Sale | Mar 28, 2006 · Amount on Record |
| Deed Document Number | 201043201 |
| Last Transfer Date | Jul 18, 2013 |
| Transfer Doc | 0000193570 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,533,873 (+2%) Land $954,558 Building $579,315 | |
| 2025 | $17,255.00 (+3.66%) Homeowner's exemption | $1,503,798 (+4.04%) Land $935,842 Building $567,956 |
| 2023 | $16,645.00 (+0.74%) Homeowner's exemption | $1,445,405 Land $899,503 Building $545,902 |
| 2022 | $16,522.00 |
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 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 19 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 19 in force |
| Nearby Flood Claims | 8 (1987–2012) |
| Claims Outside the SFHA | 1 of 8 |
| Most Recent Claim | Oct 2012 · tidal / storm surge |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 64% of the US · lower than 78% of California |
|---|---|
| Wildfire Likelihood | 0.03% 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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| Lead | Under 1 ppb (2022–2024) 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 194 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 |
| AT&T DSL | 100 / 20 |
5G (outdoors only) and 4G LTE
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