Contra Costa County property record for 800 Gloucester St, Antioch, CA 94509
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,075 sqft · built 1980 |
| Lot Size | 0.236 acres (10,295 sqft) |
| Owner | Individual Name on File |
| Last Sale | $464,300 (May 2025) |
| Tax Bill | $7,384 (2025) |
| Deeds & Mortgages | Jan 2024 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 071-422-001-9 |
| Primary APN | 071-422-001-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,075 sqft Living Area |
| 1st Floor Area | 1,634 sqft |
| Basement Area | 441 sqft |
| Year Built | Built 1980 |
|---|---|
| Effective Year Built | Effective 1980 |
| Lot Area | 10,295 sqft (0.236 acres) |
| Garage Type | Attached |
| Garage Area | 472 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 800 GLOUCESTER ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-5540 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | T04698 L0046 B EX MR |
| Legal Subdivision | SUBDIVISION 4698 |
| Legal Tract | 04698 |
| Legal Lot Number | 46 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 307101 |
800 Gloucester St is owned by an individual who bought it in May 2025.
Source: Contra Costa County records, as of July 20, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 11344 GOLF LINKS RD, OAKLAND, CA 94605-5718 |
| Owner Type | Individual |
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 | May 13, 2025 · Amount on File |
| Deed Sale | May 13, 2025 · Amount on File |
| Prior Sale | Jun 15, 2007 |
| Deed Document Number | 202546917 |
| Prior Transfer Date | May 9, 2025 |
| Prior Transfer Doc | 0000046917 |
| Record Updated | Oct 29, 2026 |
| Document Type | Affidavit of Death of Joint Tenant |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 23, 2024 |
| Property Address | 800 GLOUCESTER ST, ANTIOCH, CA 94509-5540 |
| Document Number | 0000006847 |
| Map Reference | MB 202 PG 49 |
| Instrument Date | Jan 23, 2024 |
| Instrument | 2024-006847 |
| Transaction Type | Transfer |
| Record Updated | Feb 1, 2024 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 800 GLOUCESTER ST, ANTIOCH, CA 94509-5540 |
The 2025 property tax bill for 800 Gloucester St was $7,384.
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 | $637,500 (+3.49%) Land $193,800 Building $443,700 | |
| 2025 | $7,384.00 | $616,000 Land $248,561 Building $367,439 |
| 2023 | $6,999.00 (-8.26%) Homeowner's exemption | $589,000 Land $238,000 Building $351,000 |
| 2022 | $7,629.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 800 Gloucester 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 800 Gloucester St is low, with 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 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 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 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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