Contra Costa County property record for 1811 C St, Antioch, CA 94509
| Property Type | Care Home (Retirement, Nursing, Convalescent) |
|---|---|
| Details | 4,501 sqft · built 1951 |
| Lot Size | 0.35 acres (15,264 sqft) |
| Owner | Company Name on File |
| Last Sale | $390,500 (May 2015) |
| Tax Bill | $6,648 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 067-262-002-8 |
| Primary APN | 067-262-002-8 |
|---|---|
| Alternative APN |
|
| Stories | 1 Story |
|---|---|
| Building Area | 4,501 sqft Gross Area |
| 1st Floor Area | 4,501 sqft |
| Year Built | Built 1951 |
|---|---|
| Effective Year Built | Effective 1954 |
| Lot Area | 15,264 sqft (0.35 acres) |
| Lot Dimensions | 150 ft deep x 101 ft wide |
| View / Lot | Corner |
| Street Address | 1811 C ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-2546 |
| Property Category | Commercial |
| Property Type | Commercial > Retail > Care Home (Retirement, Nursing, Convalescent) |
| Legal Description | SUBN LOT 9 WILLS ADDN LOTS 7.8 & 9 BLK B |
| Legal Subdivision | WILLS ADD |
| Legal Block | B |
| Legal Lot Number | 9,7 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 2 |
| Census Block | 2015 |
| Census Tract | 305000 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 490 GOLF CLUB RD, PLEASANT HILL, CA 94523-1553 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Company |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | May 27, 2015 · Amount on File |
| Deed Sale | May 27, 2015 · Amount on File |
| Deed Document Number | 2015106096 |
| Record Updated | Sep 20, 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 | $508,731 (+2%) Land $337,112 Building $171,619 | |
| 2025 | $6,648.00 (+557.57%) | $498,756 (+4.04%) Land $330,502 Building $168,254 |
| 2023 | $1,011.00 (-0.1%) Additional exemption filed | $479,390 Land $317,669 Building $161,721 |
| 2022 | $1,012.00 |
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
| 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.
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 754 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, 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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