Contra Costa County property record for 4136 Mattole Rd, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,085 sqft · built 2001 |
| Lot Size | 0.104 acres (4,509 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $430,000 (Sep 2020) |
| Tax Bill | $4,665 (2025) |
| Deeds & Mortgages | Sep 2020 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 055-650-030-4 |
| Primary APN | 055-650-030-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,085 sqft Living Area |
| 1st Floor Area | 1,102 sqft |
| 2nd Floor Area | 983 sqft |
| Year Built | Built 2001 |
|---|---|
| Effective Year Built | Effective 2001 |
| Lot Area | 4,509 sqft (0.104 acres) |
| Garage Type | Attached |
| Garage Area | 472 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4136 MATTOLE RD |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-9102 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8410 L105 |
| Legal Subdivision | SUBDIVISION 8410 |
| Legal Tract | 8410 |
| Legal Lot Number | 105 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | TASSAJARA |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 355118 |
4136 Mattole Rd is owned and occupied by two individuals who bought it in September 2020.
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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 4136 MATTOLE RD, ANTIOCH, CA 94531-9102 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 29, 2020 · Amount on File |
| Deed Sale | Sep 29, 2020 · Amount on File |
| Prior Sale | Sep 11, 2001 · Amount on File |
| Deed Document Number | 2020220826 |
| Prior Transfer Date | Jul 7, 2005 |
| Prior Transfer Doc | 0000261041 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 29, 2020 |
| Property Address | 4136 MATTOLE RD, ANTIOCH, CA 94531-9102 |
| Document Number | 0000220826 |
| Map Reference | MB 424 PG 45 |
| Instrument Date | Sep 24, 2020 |
| Instrument | 2020-220826 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | OLD REPUBLIC 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 |
|---|---|
| Relationship | Joint Tenants |
| Address | 4136 MATTOLE RD, ANTIOCH, CA 94531-9102 |
| Document Number | 0000220827 |
|---|---|
| Date | Sep 29, 2020 |
| Instrument | 2020-220827 |
| Name | FREMONT BANK |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Oct 1, 2050 |
The 2025 property tax bill for 4136 Mattole Rd was $4,665 with a veteran's exemption.
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 | $563,078 (+2%) Land $220,814 Building $342,264 | |
| 2025 | $4,665.00 Disabled Person's exemption Veteran's exemption | $552,038 Land $216,485 Building $335,553 |
| 2023 | $4,467.00 (-21.08%) Disabled Person's exemption Veteran's exemption | $530,604 Land $208,080 Building $322,524 |
| 2022 | $5,660.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4136 Mattole Rd in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 4136 Mattole Rd is moderate, ranking above 44% of the US, with a 0.09% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 44% of the US · lower than 74% of California |
|---|---|
| Wildfire Likelihood | 0.09% annual chance |
| Exposure | Indirect 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 675 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 |
May also be available: Unwired.
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