Contra Costa County property record for 51 E 6th St, Unit A, Antioch, CA 94509 · Last verified August 2026
| Property Type | Duplex |
|---|---|
| Details | 2 bd · 2 ba · 1,756 sqft · built 1924 |
| Lot Size | 0.213 acres (9,278 sqft) |
| Owner | Company Name on File |
| Last Sale | $335,000 (Aug 2016) |
| Tax Bill | $3,432 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 066-032-027-6 |
| Primary APN | 066-032-027-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,756 sqft Living Area |
| 1st Floor Area | 948 sqft |
| Basement Area | 808 sqft |
| Year Built | Built 1924 |
|---|---|
| Effective Year Built | Effective 1950 |
| Architectural Style | Duplex Single |
| Lot Area | 9,278 sqft (0.213 acres) |
| Street Address | 51 E 6TH ST, A |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-1867 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Description | T215PM46 PCL A |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 305000 |
Source: Contra Costa County records · APN 066-032-027-6
Assessment roll updated July 14, 2026 · Last verified August 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 208 DORCHESTER LN, ALAMO, CA 94507-1756 |
| Owner Type | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Aug 18, 2016 · Amount on Record |
| Deed Sale | Aug 18, 2016 · Amount on Record |
| Prior Sale | Oct 21, 1996 · Amount on Record |
| Deed Document Number | 2016165724 |
| Last Transfer Date | Jun 30, 2023 |
| Transfer Doc | 0000064228 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $258,599 (+2%) Land $88,781 Building $169,818 | |
| 2025 | $3,432.00 (+5.63%) | $253,530 (+4.04%) Land $87,041 Building $166,489 |
| 2023 | $3,249.00 (+1.47%) | $243,687 Land $83,662 Building $160,025 |
| 2022 | $3,202.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Moderate |
| 500-Year Floodplain | Yes |
| Special Flood Hazard Area | No |
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
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