Contra Costa County property record for 55 E 18th St, Antioch, CA 94509 · Last verified July 2026
| Property Type | Religious, Church, Worship (Synagogue, Temple, Parsonage) |
|---|---|
| Details | 10,017 sqft · built 1970 |
| Lot Size | 1.01 acres (44,431 sqft) |
| Owner | Company Name on File |
| Tax Bill | $671 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 065-183-036-6 |
| Primary APN | 065-183-036-6 |
|---|---|
| Alternative APN |
|
| Total Rooms | 1 Room |
|---|---|
| Stories | 1 Story |
| Building Area | 10,017 sqft Gross Area |
| 1st Floor Area | 10,017 sqft |
| Year Built | Built 1970 |
|---|---|
| Effective Year Built | Effective 1970 |
| Lot Area | 44,431 sqft |
| Street Address | 55 E 18TH ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-2450 |
| Property Category | Other |
| Property Type | Other > Religious, Church, Worship (Synagogue, Temple, Parsonage) |
| Legal Description | POR SW QR OF NW GR 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 | 2 |
| Census Block | 2004 |
| Census Tract | 306003 |
Source: Contra Costa County records · APN 065-183-036-6
Assessment roll updated July 14, 2026 · Last verified July 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 | 55 E 18TH ST, ANTIOCH, CA 94509-2450 |
| Owner Type | Company |
| Deed Names | Verified Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 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 | $1,774,419 (+2%) Land $711,049 Building $1,063,370 | |
| 2025 | $671.00 (+8.58%) Additional exemption filed | $1,739,627 (+4.04%) Land $697,107 Building $1,042,520 |
| 2023 | $618.00 (-0.16%) Additional exemption filed | $1,672,078 Land $670,039 Building $1,002,039 |
| 2022 | $619.00 |
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 |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| 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.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 754 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 250 |
| Unwired | Fixed Wireless | 300 / 25 |
May also be available at this address: AT&T, Verizon, T-Mobile USA. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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