Contra Costa County property record for 801 A St, Antioch, CA 94509
| Property Type | Auto Repair, Garage |
|---|---|
| Details | 13,868 sqft · built 1927 |
| Lot Size | 0.838 acres (36,489 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $10,997 (2025) |
| Deeds & Mortgages | Jan 2021 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 066-164-007-8 |
| Primary APN | 066-164-007-8 |
|---|---|
| Alternative APN |
|
| Total Rooms | 3 Rooms |
|---|---|
| Stories | 1 Story |
| Building Area | 13,868 sqft Gross Area |
| 1st Floor Area | 13,868 sqft |
| Year Built | Built 1927 |
|---|---|
| Effective Year Built | Effective 1947 |
| Exterior Material | Brick Veneer |
| Construction Type | Masonry / Concrete Block |
| Roof Type | Mansard |
| Roof Material | Composition Shingle |
| Lot Area | 36,489 sqft (0.838 acres) |
| View / Lot | Corner |
| Garage Area | 13,500 sqft |
| Street Address | 801 A ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-1708 |
| Property Category | Commercial |
| Property Type | Commercial > Retail > Auto Repair, Garage |
| Local Zoning Code | C-1 |
| Legal Description | POR SEC 13 & 18 S & W BY CO RD |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1021 |
| Census Tract | 305000 |
801 A St, a commercial property, is held in a trust since January 2021.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 36 CASTLE ROCK DR, MILL VALLEY, CA 94941-2607 |
| Owner Type | Company |
| Vesting | Trust |
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 Transfer Date | Jan 25, 2021 |
| Transfer Doc | 0000027692 |
| Record Updated | Oct 29, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 28, 2021 |
| Property Address | 801 A ST, ANTIOCH, CA 94509-1708 |
| Document Number | 0000027692 |
| Instrument Date | Jan 25, 2021 |
| Instrument | 27692 |
| Transaction Type | Transfer |
| Record Updated | Feb 9, 2021 |
| Title Company | TITLE SERVICE AND LIAISON COMPANIES, SIMPLIFILE LC E-RECORDING |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Irrevocable Trust |
| Address | 36 CASTLE ROCK DR MILL VALLEY CA 949412607, MILL VALLEY, CA 94941-2607 |
The 2025 property tax bill for 801 A St was $10,997.
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 | $843,517 (+2%) Land $401,046 Building $442,471 | |
| 2025 | $10,997.00 | $826,979 Land $393,183 Building $433,796 |
| 2023 | $10,404.00 (-0.02%) | $794,868 Land $377,916 Building $416,952 |
| 2022 | $10,406.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 801 A St in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 801 A St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within 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 593 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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