Contra Costa County property record for 4121 Null Dr, Antioch, CA 94509 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 2 Baths |
| Year Built | Built 1967 |
| Square Footage | 1,569 sqft Living Area |
| Lot Size | 10,138 sqft (0.233 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $160,000 (1999) |
| Tax Bill | $3,795.00 (2025) |
| Primary APN | 074-261-023-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Building Area | 1,569 sqft Living Area |
| 1st Floor | 1,569 sqft 1st Floor |
| Stories | 1 Stories |
| Year Built | Built 1966 |
|---|---|
| Effective Year Built | Effective 1967 |
| Lot Area | 10,138 sqft (0.233 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 472 sqft Garage |
| Street Address | 4121 DR |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | TRACT 3437 LOT 53 EX MR |
| Legal Subdivision | NEW DELTA ESTATES SUB 3437 |
| Legal Tract | 3437 |
| Legal Lot Number | 53 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | ANTIOCH-PITTSBURG |
| Census Blockgroup | 1 |
| Census Block | 1010 |
| Census Tract | 307201 |
Source: Contra Costa County records · APN 074-261-023-1
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 | Individual Name on File |
|---|---|
| Mailing Address | 4121 DR, ANTIOCH, CA 94509 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | May 21, 1999 · Amount on Record |
| Deed Sale | May 21, 1999 · Amount on Record |
| Deed Doc Number | 1999136915 |
| Last Transfer Date | Dec 30, 2003 |
| Transfer Doc | 0000011963 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Nov 10, 2020 |
| Property Address | 4121 NULL DR, ANTIOCH, CA 94509-4337 |
| Document Number | 0000269594 |
| Map Reference | MB 106 PG 34 |
| Instrument Date | Apr 06, 2020 |
| Instrument | 2020-269594 |
| Transaction Type | Transfer |
| Record Updated | Nov 03, 2022 |
| Title Company | FIRST AMERICAN TITLE INS CO |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|---|
| Address | 4121 NULL DR, 4121, ANTIOCH, CA 94509-4337 |
| Name | Verified Name |
|---|---|
| Address | 4121 NULL DR, ANTIOCH, CA 94509-4337 |
| Document Number | 0000269595 |
|---|---|
| Date | Nov 10, 2020 |
| Instrument | 2020-269595 |
| Name | BANK OF THE WEST |
|---|---|
| Type | Bank |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 174 Months |
| Due | May 01, 2035 |
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 | $293,751 (+2%) Land $55,954 Building $237,797 | |
| 2025 | $3,795.00 (+5.53%) | $287,992 (+4.04%) Land $54,857 Building $233,135 |
| 2023 | $3,596.00 (+1.52%) | $276,811 Land $52,728 Building $224,083 |
| 2022 | $3,542.00 |
4121 Null Dr is in FEMA Zone X, outside the Special Flood Hazard Area, with indirect wildfire exposure (Moderate risk).
Source: FEMA National Flood Hazard Layer · Contra Costa County (06013C), updated October 12, 2026
| FEMA Flood Zone | Zone X minimal flood hazard · outside the 0.2% annual chance floodplain |
|---|---|
| Special Flood Hazard Area | No |
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk to Homes | Moderate 43rd percentile of exposed land nationally · 25th in California |
|---|---|
| Wildfire Likelihood | Moderate — about 1 in 1,389 per year |
| Exposure | Indirect within ember reach of burnable land · adjoins burnable vegetation |
Values are read at the parcel center point; lenders make the official flood determination.
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