Contra Costa County property record for 5100 Roundup Ct, Antioch, CA 94531 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 2 Baths |
| Year Built | Built 1995 |
| Square Footage | 1,095 sqft Living Area |
| Lot Size | 9,060 sqft (0.208 acres) |
| Garage | Attached, 469 sqft |
| Last Sale | $149,000 (2012) |
| Tax Bill | $2,681.00 (2025) |
| Primary APN | 056-240-008-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 5 Rooms |
| Building Area | 1,095 sqft Living Area |
| 1st Floor | 1,095 sqft 1st Floor |
| Stories | 1 Stories |
| Year Built | Built 1994 |
|---|---|
| Effective Year Built | Effective 1995 |
| Lot Area | 9,060 sqft (0.208 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 469 sqft Garage |
| Heating System | Central Heating |
|---|
| Street Address | 5100 ROUNDUP CT |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8474 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | T7620 L492 |
| Legal Tract | 7620 |
| Legal Lot Number | 492 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | EAST CONTRA COSTA |
| Census Blockgroup | 1 |
| Census Block | 1011 |
| Census Tract | 303207 |
Source: Contra Costa County records · APN 056-240-008-5
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 | 4540 WILDCAT CIR, ANTIOCH, CA 94531-7149 |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | May 25, 2012 · Amount on Record |
| Deed Sale | May 25, 2012 · Amount on Record |
| Prior Sale | Feb 16, 2012 · Amount on Record |
| Deed Doc Number | 2012121909 |
| Prior Transfer Date | Jul 15, 2004 |
| Prior Transfer Doc | 0000280165 |
| Record Refreshed | 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 | $190,880 (+2%) Land $61,489 Building $129,391 | |
| 2025 | $2,681.00 (+6.73%) | $187,138 (+4.04%) Land $60,284 Building $126,854 |
| 2023 | $2,512.00 (+1.29%) | $179,873 Land $57,944 Building $121,929 |
| 2022 | $2,480.00 |
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