Contra Costa County property record for 2109 Mark Twain Dr, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,250 sqft · built 1990 |
| Lot Size | 0.115 acres (5,000 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $650,000 (Aug 2023) |
| Tax Bill | $7,576 (2025) |
| Deeds & Mortgages | Aug 2023 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 055-160-003-4 |
| Primary APN | 055-160-003-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 2,250 sqft Living Area |
| 1st Floor Area | 1,312 sqft |
| 2nd Floor Area | 938 sqft |
| Year Built | Built 1990 |
|---|---|
| Effective Year Built | Effective 1991 |
| Lot Area | 5,000 sqft (0.115 acres) |
| Garage Type | Attached |
| Garage Area | 559 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 2109 MARK TWAIN DR |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-8304 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T7128 L3 |
| Legal Subdivision | SUBDIVISION 7128 |
| Legal Tract | 7128 |
| Legal Lot Number | 3 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | TASSAJARA |
| Census Block Group | 2 |
| Census Block | 2000 |
| Census Tract | 355120 |
2109 Mark Twain Dr is owned by a company that bought it in August 2023.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Company Names on File |
|---|---|
| Mailing Address | 651 8TH AVE, MENLO PARK, CA 94025-1852 |
| Owner Type | Company |
| Vesting | Life Tenant |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Aug 18, 2023 · Amount on File |
| Deed Sale | Aug 18, 2023 · Amount on File |
| Prior Sale | Sep 7, 2012 · Amount on File |
| Deed Document Number | 202379889 |
| Prior Transfer Date | May 3, 1996 |
| Prior Transfer Doc | 0000085782 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Aug 18, 2023 |
| Property Address | 2109 MARK TWAIN DR, ANTIOCH, CA 94531-8304 |
| Document Number | 0000079889 |
| Map Reference | MB 346 PG 20 |
| Instrument Date | Aug 4, 2023 |
| Instrument | 2023-079889 |
| Transaction Type | Transfer |
| Record Updated | Aug 29, 2023 |
| Title Company | FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN 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 | 651 8TH AVE, MENLO PARK, CA 94025-1852 |
| Document Number | 0000079890 |
|---|---|
| Date | Aug 18, 2023 |
| Instrument | 2023-079890 |
| Name | NP INC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Sep 1, 2053 |
The 2025 property tax bill for 2109 Mark Twain Dr was $7,576.
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 | $676,260 (+2%) Land $249,696 Building $426,564 | |
| 2025 | $7,576.00 | $663,000 Land $244,800 Building $418,200 |
| 2023 | $3,488.00 (+1.48%) | $284,058 Land $47,339 Building $236,719 |
| 2022 | $3,437.00 |
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 2109 Mark Twain Dr in Zone X, an area of minimal flood risk.
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 |
| Nearby Flood Policies | 2 in force |
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.
Wildfire risk around 2109 Mark Twain Dr is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 94% of the US · lower than 96% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 753 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| AT&T DSL · Fiber, Fixed Wireless in parts of the area | 100 / 20 |
May also be available: Verizon.
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