Contra Costa County property record for 5156 Roundup Way, Antioch, CA 94531 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,475 sqft · built 1995 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $392,000 (Oct 2016) |
| Tax Bill | $5,419 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 056-230-012-9 |
| Primary APN | 056-230-012-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,475 sqft Living Area |
| 1st Floor Area | 1,475 sqft |
| Year Built | Built 1995 |
|---|---|
| Effective Year Built | Effective 1995 |
| Lot Area | 5,000 sqft (0.115 acres) |
| Garage Type | Attached |
| Garage Area | 467 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 5156 ROUNDUP WAY |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8470 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T7620 L504 |
| Legal Tract | 7620 |
| Legal Lot Number | 504 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1014 |
| Census Tract | 303207 |
Source: Contra Costa County records · APN 056-230-012-9
Assessment roll updated July 14, 2026 · Last verified July 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 File |
|---|---|
| Mailing Address | 5156 ROUNDUP WAY, ANTIOCH, CA 94531-8470 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Oct 04, 2016 · Amount on Record |
| Deed Sale | Oct 04, 2016 · Amount on Record |
| Prior Sale | Aug 07, 2009 · Amount on Record |
| Deed Document Number | 2016205409 |
| Prior Transfer Date | Apr 05, 2016 |
| Prior Transfer Doc | 0000074881 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $464,041 (+2%) Land $130,214 Building $333,827 | |
| 2025 | $5,419.00 (+6.21%) Homeowner's exemption | $454,943 (+4.04%) Land $127,661 Building $327,282 |
| 2023 | $5,102.00 (+1.57%) Homeowner's exemption | $437,278 Land $122,704 Building $314,574 |
| 2022 | $5,023.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Moderate above 57% of the US · above 34% of California |
|---|---|
| Wildfire Likelihood | About 1 in 546 per year |
| Exposure | Direct burnable vegetation at the parcel |
Values are read at the parcel center point; lenders make the official flood determination.
Source: NPS National Register of Historic Places · August 1, 2026 release · Last verified October 2026
| Historic District | Within the Shannon-Williamson Ranch listed 1987 · 12 contributing resources · NRIS 87000003 |
|---|
Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures