Contra Costa County property record for 3103 Ursus Ct, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3.5 ba · 2,798 sqft · built 2000 |
| Lot Size | 0.25 acres (10,872 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $788,000 (Jun 2025) |
| Tax Bill | $8,403 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 053-630-023-9 |
| Primary APN | 053-630-023-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 2,798 sqft Living Area |
| 1st Floor Area | 1,486 sqft |
| 2nd Floor Area | 1,312 sqft |
| Year Built | Built 2000 |
|---|---|
| Effective Year Built | Effective 2001 |
| Lot Area | 10,872 sqft (0.25 acres) |
| Garage Type | Attached |
| Garage Area | 446 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 3103 URSUS CT |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-9352 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T7251 L132 |
| Legal Subdivision | SUBDIVISION 7251 |
| Legal Tract | 7251 |
| Legal Lot Number | 132 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 355111 |
3103 Ursus Ct is owned and occupied by two individuals who bought it in June 2025.
Source: Contra Costa County records, as of August 18, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 3103 URSUS CT, ANTIOCH, CA 94531-9352 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
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 20, 2025 · Amount on File |
| Deed Sale | Jun 20, 2025 · Amount on File |
| Prior Sale | Aug 22, 2024 · Amount on File |
| Deed Document Number | 202562305 |
| Prior Transfer Date | Jun 13, 2003 |
| Prior Transfer Doc | 0000288524 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 3103 Ursus Ct was $8,403.
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 | $803,760 (+10.86%) Land $153,000 Building $650,760 | |
| 2025 | $8,403.00 | $725,000 Land $225,000 Building $500,000 |
| 2023 | $8,318.00 (-0.2%) Homeowner's exemption | $741,000 Land $139,939 Building $601,061 |
| 2022 | $8,335.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 3103 Ursus Ct in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 3103 Ursus Ct is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 432 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
May also be available: Verizon.
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