Contra Costa County property record for 812 E 18th St, Antioch, CA 94509 · Last verified August 2026
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,604 sqft · built 1956 |
| Lot Size | 0.666 acres (29,010 sqft) |
| Owner | Company Name on File |
| Last Sale | $742,000 (Jul 2023) |
| Tax Bill | $9,589 (2025) |
| Deeds & Mortgages | Nov 2023 Sale Jul 2023 Transfer + 1 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 068-082-048-7 |
| Primary APN | 068-082-048-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,604 sqft Living Area |
| Gross Area | 1,988 sqft |
| 1st Floor Area | 1,988 sqft |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1980 |
| Lot Area | 29,010 sqft (0.666 acres) |
| Garage Type | Attached |
| Garage Area | 390 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 812 E 18TH ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-2834 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | POR SEC 19 T2N R2E |
| Legal Range | 02E |
| Legal Township | 02N |
| Legal Section | 19 |
| Legal Subdivision | ABBOTT & BEEDE TR |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 306003 |
Source: Contra Costa County records · APN 068-082-048-7
Assessment roll updated July 14, 2026 · Last verified August 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 | PO BOX 187, SAN CARLOS, CA 94070-0187 |
| Owner Type | Company |
| Vesting | Limited Liability Company |
| Date | Document |
|---|---|
| Nov 28, 2023 | Grant Deed, Transfer |
| Jul 11, 2023 | Intrafamily Transfer, Transfer OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Jul 11, 2023 | Grant Deed, Transfer · Conventional Mortgage ARC HOME LLC |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Jul 11, 2023 · Amount on Record |
| Deed Sale | Jul 11, 2023 · Amount on Record |
| Prior Sale | Mar 20, 1995 · Amount on Record |
| Deed Document Number | 202365691 |
| Prior Transfer Date | Jul 07, 2023 |
| Prior Transfer Doc | 0000065690 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Nov 28, 2023 |
| Property Address | 812 E 18TH ST, ANTIOCH, CA 94509-2834 |
| Document Number | 0000125961 |
| Map Reference | MB E PG 101 |
| Instrument Date | Nov 18, 2023 |
| Instrument | 2023-125961 |
| Transaction Type | Transfer |
| Record Updated | Dec 13, 2023 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | PO BOX 187, SAN CARLOS, CA 94070-0187 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 11, 2023 |
| Property Address | 812 E 18TH ST, ANTIOCH, CA 94509-2834 |
| Document Number | 0000065690 |
| Map Reference | MB E PG 101 |
| Instrument Date | Jul 07, 2023 |
| Instrument | 2023-065690 |
| Transaction Type | Transfer |
| Record Updated | Jul 21, 2023 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | PO BOX 187, SAN CARLOS, CA 94070-0187 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 11, 2023 |
| Property Address | 812 E 18TH ST, ANTIOCH, CA 94509-2834 |
| Document Number | 0000065691 |
| Map Reference | MB E PG 101 |
| Instrument Date | Jun 28, 2023 |
| Instrument | 2023-065691 |
| Transaction Type | Transfer |
| Record Updated | Jul 21, 2023 |
| Title Company | OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | PO BOX 187, SAN CARLOS, CA 94070-0187 |
| Document Number | 0000065692 |
|---|---|
| Date | Jul 11, 2023 |
| Instrument | 2023-065692 |
| Name | ARC HOME LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Aug 01, 2053 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified August 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
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.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $771,976 (+2%) Land $416,160 Building $355,816 | |
| 2025 | $9,589.00 (+389.23%) | $756,840 (+711.12%) Land $408,000 Building $348,840 |
| 2023 | $1,960.00 (+0.93%) Homeowner's exemption | $93,308 (+2%) Land $34,425 Building $58,883 |
| 2022 | $1,942.00 Homeowner's exemption | $91,479 Land $33,750 Building $57,729 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133060033, refreshed September 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 |
| Flood Insurance Cost | Premium on Record median of 1 individual NFIP policies nearby |
| Nearby Flood Policies | 1 in force 1 of 1 on primary residences |
| Nearby Flood Claims | 1 (1998) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1998, rainfall accumulation, Severe Winter Storms And Flooding |
| 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; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
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