Contra Costa County property record for 3520 G St, Antioch, CA 94509
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,901 sqft · built 1977 |
| Lot Size | 0.147 acres (6,400 sqft) |
| Owner | Individual Name on File |
| Last Sale | $390,000 (Oct 2016) |
| Tax Bill | $5,635 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 072-083-009 |
| Primary APN | 072-083-009 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 1,901 sqft Living Area |
| 1st Floor Area | 1,069 sqft |
| 2nd Floor Area | 832 sqft |
| Year Built | Built 1977 |
|---|---|
| Effective Year Built | Effective 1988 |
| Lot Area | 6,400 sqft (0.147 acres) |
| Garage Type | Attached |
| Garage Area | 431 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 3520 G ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-5931 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | TRACT 4668 LOT 61 |
| Legal Tract | 4668 |
| Legal Lot Number | 61 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 307101 |
3520 G St is owned and occupied by an individual who bought it in October 2016.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 3520 G ST, ANTIOCH, CA 94509-5931 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
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 | Name on Deed |
|---|---|
| Last Sale | Oct 28, 2016 · Amount on File |
| Deed Sale | Oct 28, 2016 · Amount on File |
| Prior Sale | Oct 4, 2016 · Amount on File |
| Deed Document Number | 2016232903 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 3520 G St was $5,635.
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 | $461,675 (+2%) Land $118,377 Building $343,298 | |
| 2025 | $5,635.00 | $452,623 Land $116,056 Building $336,567 |
| 2023 | $5,359.00 (+1.57%) | $435,049 Land $111,550 Building $323,499 |
| 2022 | $5,276.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 3520 G St 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 3520 G St is low, with a 0.04% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 65% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 582 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 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: AT&T.
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