Contra Costa County property record for 711 W 4th St, Antioch, CA 94509
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,627 sqft · built 1914 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | Individual Name on File |
| Last Sale | $548,000 (Jan 2026) |
| Tax Bill | $1,621 (2025) |
| Deeds & Mortgages | Jan 2026 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 066-141-007-6 |
| Primary APN | 066-141-007-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,627 sqft Living Area |
| 1st Floor Area | 1,627 sqft |
| Year Built | Built 1914 |
|---|---|
| Effective Year Built | Effective 1914 |
| Lot Area | 5,000 sqft (0.115 acres) |
| Street Address | 711 W 4TH ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-1114 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | C2 |
| Legal Description | TOWN OF ANTIOCH LOT 3 BLK 20 |
| Legal Subdivision | ANTIOCH |
| Legal Block | 20 |
| Legal Lot Number | 3 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 5 |
| Census Block | 5001 |
| Census Tract | 305000 |
711 W 4th St is owned and occupied by an individual who bought it in January 2026.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 711 W 4TH ST, ANTIOCH, CA 94509-1114 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Woman |
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 | Jan 5, 2026 · Amount on File |
| Deed Sale | Jan 5, 2026 · Amount on File |
| Prior Sale | Feb 4, 1999 · Amount on File |
| Deed Document Number | 2026639 |
| Prior Transfer Date | Sep 25, 2007 |
| Prior Transfer Doc | 0000274250 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 5, 2026 |
| Property Address | 711 W 4TH ST, ANTIOCH, CA 94509-1114 |
| Document Number | 0000000639 |
| Instrument Date | Jan 2, 2026 |
| Instrument | 2026- 000639 |
| Transaction Type | Transfer |
| Record Updated | Jan 14, 2026 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 711 W 4TH ST, ANTIOCH, CA 94509-1114 |
| Document Number | 0000000640 |
|---|---|
| Date | Jan 5, 2026 |
| Instrument | 2026- 000640 |
| Name | UNITED WHOLESALE MORTGAGE |
|---|---|
| Type | Mortgage Company |
| Type | FHA Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Feb 1, 2056 |
The 2025 property tax bill for 711 W 4th St was $1,621.
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 | $95,917 (+2%) Land $79,941 Building $15,976 | |
| 2025 | $1,621.00 | $94,037 Land $78,374 Building $15,663 |
| 2023 | $1,512.00 (+1.14%) | $90,387 Land $75,332 Building $15,055 |
| 2022 | $1,495.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 711 W 4th 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 · OpenFEMA NFIP redacted claims and policies, as of September 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 |
| Flood Insurance Cost | Premium on File median of 16 policies |
| Nearby Flood Policies | 16 in force |
| Nearby Flood Claims | 47 (1982–2022) |
| Claims Outside the SFHA | 15 of 47 |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
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.
The area around 711 W 4th 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 374 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: T-Mobile, Verizon.
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