Contra Costa County property record for 5 Los Alamos Ct, Alamo, CA 94507
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3.5 ba · 3,796 sqft · built 1951 |
| Lot Size | 0.464 acres (20,227 sqft) |
| Owner | Trust Name on File |
| Last Sale | $3,650,000 (May 2024) |
| Tax Bill | $23,574 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 198-131-020-2 |
| Primary APN | 198-131-020-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 11 Rooms |
| Stories | 1 Story |
| Building Area | 3,796 sqft Living Area |
| 1st Floor Area | 3,796 sqft |
| Year Built | Built 1951 |
|---|---|
| Effective Year Built | Effective 2000 |
| Lot Area | 20,227 sqft (0.464 acres) |
| Garage Type | Attached |
| Garage Area | 1,036 sqft |
| Parking Spaces | 4 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 5 LOS ALAMOS CT |
|---|---|
| City | ALAMO |
| State | CA |
| Zip | 94507-2131 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | LOS ALAMOS ESTATES #1 8 |
| Legal Subdivision | LOS ALAMOS ESTATES #1 |
| Legal Lot Number | 8 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 345204 |
5 Los Alamos Ct is owner-occupied and held in a trust since May 2024.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 5 LOS ALAMOS CT, ALAMO, CA 94507-2131 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 21, 2024 · Amount on File |
| Deed Sale | May 21, 2024 · Amount on File |
| Prior Sale | Jul 15, 2003 · Amount on File |
| Deed Document Number | 202447405 |
| Prior Transfer Date | Apr 20, 2010 |
| Prior Transfer Doc | 0000085970 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 5 Los Alamos Ct was $23,574 with a homeowner's exemption.
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 | $2,129,213 (+2%) Land $482,320 Building $1,646,893 | |
| 2025 | $23,574.00 Homeowner's exemption | $2,087,464 Land $472,863 Building $1,614,601 |
| 2023 | $18,621.00 (+0.75%) Homeowner's exemption | $1,627,019 Land $956,601 Building $670,418 |
| 2022 | $18,483.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 5 Los Alamos Ct in Zone X, an area of minimal flood risk, though there have been 5 flood claims nearby since 1993.
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 11 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 11 in force |
| Nearby Flood Claims | 5 (1993–2012) |
| Claims Outside the SFHA | 3 of 5 |
| Most Recent Claim | Dec 2012 · rainfall accumulation |
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.
Wildfire risk around 5 Los Alamos Ct is moderate, ranking above 52% of the US, with a 0.1% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 52% of the US · lower than 69% of California |
|---|---|
| Wildfire Likelihood | 0.1% 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 200 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
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