Contra Costa County property record for 321 Minner Ave, Antioch, CA 94509
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,435 sqft · built 1952 |
| Lot Size | 0.133 acres (5,800 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $350,000 (May 2007) |
| Tax Bill | $9,314 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 068-522-013-9 |
| Primary APN | 068-522-013-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,435 sqft Living Area |
| Gross Area | 1,808 sqft |
| 1st Floor Area | 1,435 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1952 |
|---|---|
| Effective Year Built | Effective 1952 |
| Architectural Style | Ranch |
| Exterior Material | Block |
| Construction Type | Frame |
| Roof Material | Composition Shingle |
| Lot Area | 5,800 sqft (0.133 acres) |
| Garage Type | Attached |
| Garage Area | 373 sqft |
| Parking Spaces | 1 Parking Space |
| Heating System | Forced Air with A/C |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 321 MINNER AVE |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-2639 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | WOODLAND MANOR #1 LOT 28 |
| Legal Subdivision | WOODLAND MANOR 01 |
| Legal Lot Number | 28 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 3 |
| Census Block | 3008 |
| Census Tract | 306003 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 321 MINNER AVE, ANTIOCH, CA 94509-2639 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 23, 2007 · Amount on Record |
| Deed Sale | May 23, 2007 · Amount on Record |
| Deed Document Number | 2007150532 |
| Record Updated | Oct 29, 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 | $478,286 (+2%) Land $273,306 Building $204,980 | |
| 2025 | $9,314.00 (+3.12%) | $468,909 (+4.04%) Land $267,948 Building $200,961 |
| 2023 | $9,032.00 (+0.97%) | $450,703 Land $257,545 Building $193,158 |
| 2022 | $8,945.00 |
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 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (1998) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1998 · Severe Winter Storms And Flooding |
Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
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 741 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 |
May also be available: Verizon.
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