Contra Costa County property record for 3503 Stone Pl, Antioch, CA 94509
| Property Type | Townhouse |
|---|---|
| Details | 3 bd · 2.5 ba · 1,349 sqft · built 1985 |
| Lot Size | 0.031 acres (1,344 sqft) |
| Owner | Individual Name on Record |
| Tax Bill | $3,038 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 072-182-028 |
| Primary APN | 072-182-028 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 7 Rooms |
| Stories | 2 Stories |
| Building Area | 1,349 sqft Living Area |
| 1st Floor Area | 543 sqft |
| 2nd Floor Area | 806 sqft |
| Year Built | Built 1985 |
|---|---|
| Effective Year Built | Effective 1986 |
| Architectural Style | Townhouse |
| Exterior Material | Stucco |
| Roof Material | Tile |
| Lot Area | 1,344 sqft (0.031 acres) |
| Lot Dimensions | 58 ft deep x 26 ft wide |
| Garage Type | Attached |
| Garage Area | 454 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 3503 STONE PL |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-5473 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | PD |
| Legal Description | T05330 L0073 B |
| Legal Tract | 05330 |
| Legal Lot Number | 73 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 307101 |
Source: Contra Costa County records, as of August 6, 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 | PO BOX 4231, ANTIOCH, CA 94531-4231 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
| Deed Names | Name on Deed |
|---|---|
| Record Updated | Sep 20, 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 | $232,662 (+2%) Land $22,495 Building $210,167 | |
| 2025 | $3,038.00 (+5.96%) Homeowner's exemption | $228,101 (+4.04%) Land $22,054 Building $206,047 |
| 2023 | $2,867.00 (+1.49%) Homeowner's exemption | $219,246 Land $21,199 Building $198,047 |
| 2022 | $2,825.00 |
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
| 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 | Moderate above 44% of the US · lower than 74% of California |
|---|---|
| Wildfire Likelihood | 0.08% annual chance |
| Exposure | Direct burnable vegetation |
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 501 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 DSL · Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Verizon.
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