Contra Costa County property record for 9402 Alcosta Blvd, San Ramon, CA 94583
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,848 sqft · built 1976 |
| Lot Size | 0.244 acres (10,625 sqft) |
| Owner | Individual Name on File |
| Last Sale | $767,000 (Apr 2005) |
| Tax Bill | $12,616 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 210-710-001-4 |
| Primary APN | 210-710-001-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 1,848 sqft Living Area |
| Gross Area | 2,359 sqft |
| 1st Floor Area | 1,848 sqft |
| Year Built | Built 1976 |
|---|---|
| Effective Year Built | Effective 1985 |
| Lot Area | 10,625 sqft (0.244 acres) |
| Garage Type | Attached |
| Garage Area | 511 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 9402 ALCOSTA BLVD |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94583-3930 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T04650 L0001 B EX MR |
| Legal Tract | 04650 |
| Legal Lot Number | 1 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1008 |
| Census Tract | 345103 |
9402 Alcosta Blvd is owned and occupied by an individual who bought it in April 2005.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 9402 ALCOSTA BLVD, SAN RAMON, CA 94583-3930 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
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 | Apr 21, 2005 · Amount on File |
| Deed Sale | Apr 21, 2005 · Amount on File |
| Prior Sale | Jul 22, 1999 · Amount on File |
| Deed Document Number | 2005139824 |
| Prior Transfer Date | Nov 19, 1993 |
| Prior Transfer Doc | 0000038901 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 9402 Alcosta Blvd was $12,616 with a homeowner's exemption.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | San Ramon City |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,115,856 (+2%) Land $618,473 Building $497,383 | |
| 2025 | $12,616.00 Homeowner's exemption | $1,093,978 Land $606,347 Building $487,631 |
| 2023 | $12,170.00 (+0.74%) Homeowner's exemption | $1,051,499 Land $582,802 Building $468,697 |
| 2022 | $12,081.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 9402 Alcosta Blvd in Zone X, an area of minimal flood risk, though there have been 12 flood claims nearby since 1998.
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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 12 (1998–2022) |
| Claims Outside the SFHA | 4 of 12 |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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 9402 Alcosta Blvd is low, with a 0.03% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 93% of the US · lower than 96% of California |
|---|---|
| Wildfire Likelihood | 0.03% annual chance |
| Exposure | None beyond 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 | 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 292 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: AT&T.
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