Contra Costa County property record for 507 E 18th St, Antioch, CA 94509
| Property Type | Service Station (Full Service) |
|---|---|
| Details | 1,160 sqft · built 1965 |
| Lot Size | 0.225 acres (9,810 sqft) |
| Owner | Individual Name on File |
| Last Sale | $550,000 (Dec 2019) |
| Tax Bill | $7,338 (2025) |
| Deeds & Mortgages | Dec 2019 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 065-143-022-5 |
| Primary APN | 065-143-022-5 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 1,160 sqft Gross Area |
| 1st Floor Area | 1,160 sqft |
| Year Built | Built 1965 |
|---|---|
| Effective Year Built | Effective 1965 |
| Exterior Material | Wood Siding |
| Construction Type | Concrete Block |
| Roof Type | Flat |
| Lot Area | 9,810 sqft (0.225 acres) |
| Garage Area | 6,200 sqft |
| Heating System | Space Heater |
|---|
| Street Address | 507 E 18TH ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-2743 |
| Property Category | Commercial |
| Property Type | Commercial > Retail > Service Station (Full Service) |
| Legal Description | POR SEC 19 T2N R2E |
| Legal Range | 02E |
| Legal Township | 02N |
| Legal Section | 19 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1012 |
| Census Tract | 306004 |
Source: Contra Costa County assessment roll, 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 | Individual Name on File |
|---|---|
| Mailing Address | 1904 SPRING LN, MODESTO, CA 95356-8955 |
| Owner Type | Individual |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Dec 31, 2019 · Amount on Record |
| Deed Sale | Dec 31, 2019 · Amount on Record |
| Deed Document Number | 2019235012 |
| Prior Transfer Date | Sep 1, 1999 |
| Prior Transfer Doc | 0000238828 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Dec 31, 2019 |
| Property Address | 507 E 18TH ST, ANTIOCH, CA 94509-2743 |
| Document Number | 0000235012 |
| Instrument Date | Dec 23, 2019 |
| Instrument | 235012 |
| Transaction Type | Transfer |
| Record Updated | Jan 13, 2020 |
| Title Company | OLD REPUBLIC TITLE |
| Amount | Amount Recorded |
|---|---|
| Tax | $605.00 |
| Amount Accuracy | Full Value |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 1904 SPRING LN MODESTO CA 953568955, MODESTO, CA 95356-8955 |
| Investor | Possibly a Property Investor |
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 | $613,530 (+2%) Land $390,429 Building $223,101 | |
| 2025 | $7,338.00 (-14.41%) | $601,501 (+4.04%) Land $382,774 Building $218,727 |
| 2023 | $8,573.00 (+7.24%) | $578,146 Land $367,911 Building $210,235 |
| 2022 | $7,994.00 |
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 |
| Flood Insurance Cost | Premium on Record median of 19 policies |
| Nearby Flood Policies | 19 in force |
| Nearby Flood Claims | 15 (1983–2022) |
| Claims Outside the SFHA | 2 of 15 |
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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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