Contra Costa County property record for 3255 Aspara Dr, Clayton, CA 94517
| Property Type | Rural Home |
|---|---|
| Details | 4 bd · 3 ba · 4,323 sqft · built 1994 |
| Lot Size | 6.82 acres (297,514 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $1,070,000 (Jun 2015) |
| Tax Bill | $8,655 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 078-190-014-7 |
| Primary APN | 078-190-014-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Stories | 1 Story |
| Building Area | 4,323 sqft Living Area |
| 1st Floor Area | 4,323 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1994 |
|---|---|
| Effective Year Built | Effective 1994 |
| Exterior Material | Wood Siding |
| Roof Material | Composition Shingle |
| Lot Area | 297,514 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | Deck Area |
| Heating System | Floor/Wall Furnace |
|---|---|
| Heating Fuel | Gas |
| Sewer | Septic |
| Water Source | Commercial |
| Street Address | 3255 ASPARA DR |
|---|---|
| City | CLAYTON |
| State | CA |
| Zip | 94517-9717 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Rural Home |
| Local Zoning Code | FR |
| Legal Description | PARCEL MAP 29 PG 10 PCL C |
| Legal Tract | 29PM10 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | TASSAJARA |
| Census Block Group | 1 |
| Census Block | 1042 |
| Census Tract | 355112 |
3255 Aspara Dr, a rural home, is owned by two individuals who bought it in June 2015.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 6538 KNOTT AVE, EL CERRITO, CA 94530-1739 |
| Owner Type | Individual |
| Vesting | Tenants in Common |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Jun 5, 2015 · Amount on File |
| Deed Sale | Jun 5, 2015 · Amount on File |
| Prior Sale | Apr 7, 2010 · Amount on File |
| Deed Document Number | 2015113971 |
| Prior Transfer Date | May 3, 1994 |
| Prior Transfer Doc | 0000127469 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 3255 Aspara Dr was $8,655.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $796,822 (+2%) Land $796,822 | |
| 2025 | $8,655.00 | $781,199 Land $781,199 |
| 2023 | $8,340.00 (+0.06%) | $750,865 Land $750,865 |
| 2022 | $8,335.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 3255 Aspara Dr in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
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 A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on File median of 14 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 14 in force |
| Nearby Flood Claims | 2 (1982–2017) |
| Most Recent Claim | Jan 2017 · Severe Winter Storms, Flooding, 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 3255 Aspara Dr is high, ranking above 87% of the US, with a 1% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 87% of the US · above 68% of California |
|---|---|
| Wildfire Likelihood | 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 | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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.
Source: FCC Broadband Data Collection, based on 8 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| Starlink Satellite | 280 / 30 |
May also be available: T-Mobile.
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