Contra Costa County property record for 4540 Bison Way, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,400 sqft · built 1999 |
| Lot Size | 0.156 acres (6,800 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $241,000 (Jun 2011) |
| Tax Bill | $3,873 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 053-560-030-8 |
| Primary APN | 053-560-030-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,400 sqft Living Area |
| 1st Floor Area | 1,277 sqft |
| 2nd Floor Area | 1,123 sqft |
| Year Built | Built 1999 |
|---|---|
| Effective Year Built | Effective 1999 |
| Lot Area | 6,800 sqft (0.156 acres) |
| Garage Type | Attached |
| Garage Area | 664 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 4540 BISON WAY |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-7468 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T7285 L748 |
| Legal Tract | 7285 |
| Legal Lot Number | 748 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 355111 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 4540 BISON WAY, ANTIOCH, CA 94531-7468 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 27, 2011 · Amount on Record |
| Deed Sale | Jun 27, 2011 · Amount on Record |
| Prior Sale | Mar 17, 2011 · Amount on Record |
| Deed Document Number | 2011126293 |
| Prior Transfer Date | Sep 18, 2001 |
| Prior Transfer Doc | 0000290474 |
| 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 | $314,925 (+2%) Land $65,333 Building $249,592 | |
| 2025 | $3,873.00 (+6.52%) | $308,751 (+4.04%) Land $64,052 Building $244,699 |
| 2023 | $3,636.00 (+1.48%) | $296,764 Land $61,566 Building $235,198 |
| 2022 | $3,583.00 |
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Claims | 1 (2010) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Mar 2010 · other causes |
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 | 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 536 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 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures