Contra Costa County property record for 810 B St, Antioch, CA 94509
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 727 sqft · built 1939 |
| Lot Size | 0.04 acres (1,750 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $350,000 (Sep 2024) |
| Tax Bill | $4,404 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 066-186-012-2 |
| Primary APN | 066-186-012-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 727 sqft Living Area |
| 1st Floor Area | 727 sqft |
| Year Built | Built 1939 |
|---|---|
| Effective Year Built | Effective 1970 |
| Roof Material | Composition Shingle |
| Lot Area | 1,750 sqft (0.04 acres) |
| Lot Dimensions | 50 ft deep x 39 ft wide |
| Garage Type | Detached |
| Garage Area | 240 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Wall Unit |
|---|---|
| Heating System | Floor/Wall Furnace |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 810 B ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-1716 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R3 |
| Legal Description | TOWN OF ANTIOCH N 39.5 FT OF LOT 12 BLK 97 |
| Legal Subdivision | ANTIOCH HEIGHTS 01 |
| Legal Block | 97 |
| Legal Lot Number | 12 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1016 |
| Census Tract | 305000 |
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 | Individual Name on Record |
|---|---|
| Mailing Address | 810 B ST, ANTIOCH, CA 94509-1716 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Man |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 20, 2024 · Amount on Record |
| Deed Sale | Sep 20, 2024 · Amount on Record |
| Deed Document Number | 202492943 |
| Prior Transfer Date | Sep 4, 1998 |
| Prior Transfer Doc | 0000222855 |
| Record Updated | Oct 29, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $357,000 (+2%) Land $198,900 Building $158,100 | |
| 2025 | $4,404.00 (+102.11%) Homeowner's exemption | $350,000 (+132.91%) Land $195,000 Building $155,000 |
| 2023 | $2,179.00 (+1.35%) | $150,273 Land $43,661 Building $106,612 |
| 2022 | $2,150.00 |
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.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 | CITY OF ANTIOCH serves 116,781 people · EPA ID CA0710001 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2024 |
| 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.
Source: FCC Broadband Data Collection, based on 593 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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