Contra Costa County property record for 10 Hidden Valley Pl, Alamo, CA 94507
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 2 ba · 1,321 sqft · built 1923 |
| Lot Size | 0.57 acres (24,829 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $998,000 (Dec 2015) |
| Tax Bill | $13,856 (2025) |
| Deeds & Mortgages | Feb 2022 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 197-270-022-1 |
| Primary APN | 197-270-022-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,321 sqft Living Area |
| 1st Floor Area | 1,321 sqft |
| Year Built | Built 1923 |
|---|---|
| Effective Year Built | Effective 1985 |
| Lot Area | 24,829 sqft (0.57 acres) |
| Garage Type | Attached |
| Garage Area | 400 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 10 HIDDEN VALLEY PL |
|---|---|
| City | ALAMO |
| State | CA |
| Zip | 94507-2056 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | A2 |
| Legal Description | RO SAN RAMON POR DIV F STONE RANCH |
| 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 | 1000 |
| Census Tract | 346206 |
Source: Contra Costa County assessment roll, 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 File |
|---|---|
| Mailing Address | 10 HIDDEN VALLEY PL, ALAMO, CA 94507-2056 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Dec 2, 2015 · Amount on Record |
| Deed Sale | Dec 2, 2015 · Amount on Record |
| Prior Sale | Apr 4, 2011 · Amount on Record |
| Deed Document Number | 2015248965 |
| Last Transfer Date | Feb 8, 2022 |
| Transfer Doc | 0000030686 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Feb 17, 2022 |
| Property Address | 10 HIDDEN VALLEY PL, ALAMO, CA 94507-2056 |
| Document Number | 0000030686 |
| Map Reference | MB F PG 141 |
| Instrument Date | Feb 8, 2022 |
| Instrument | 2022-030686 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | FIRST AMERICAN TITLE, FIRST AMERICAN TITLE INS CO |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 10 HIDDEN VALLEY PL, ALAMO, CA 94507-2056 |
| Document Number | 0000030687 |
|---|---|
| Date | Feb 17, 2022 |
| Instrument | 2022-030687 |
| Name | BANK OF THE WEST |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Mar 1, 2052 |
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 | $1,205,050 (+2%) Land $965,976 Building $239,074 | |
| 2025 | $13,856.00 (+3.67%) | $1,181,423 (+4.04%) Land $947,036 Building $234,387 |
| 2023 | $13,365.00 (+0.74%) | $1,135,549 Land $910,262 Building $225,287 |
| 2022 | $13,267.00 |
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 minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 1 in force |
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 | Moderate above 45% of the US · lower than 73% of California |
|---|---|
| Wildfire Likelihood | 0.06% annual chance |
| Exposure | None beyond ember reach |
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 141 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 · Fiber in parts of the area | 100 / 20 |
May also be available: T-Mobile USA.
5G (outdoors only) and 4G LTE
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