Contra Costa County property record for 4002 Boulder Dr, Antioch, CA 94509
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,621 sqft · built 1966 |
| Lot Size | 0.172 acres (7,488 sqft) |
| Owner | Company Name on File |
| Tax Bill | $2,879 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 072-026-007-4 |
| Primary APN | 072-026-007-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 1,621 sqft Living Area |
| 1st Floor Area | 1,621 sqft |
| Year Built | Built 1966 |
|---|---|
| Effective Year Built | Effective 1967 |
| Lot Area | 7,488 sqft (0.172 acres) |
| Garage Type | Attached |
| Garage Area | 483 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4002 BOULDER DR |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-6233 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R4 |
| Legal Description | TRACT 3435 LOT 27 EX MR |
| Legal Tract | 3435 |
| Legal Lot Number | 27 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1008 |
| Census Tract | 355109 |
Source: Contra Costa County assessment roll, as of July 14, 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 | 4002 BOULDER DR, ANTIOCH, CA 94509-6233 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Transfer Date | Dec 4, 1998 |
| Transfer Doc | 0000306757 |
| Record Updated | Sep 20, 2026 |
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 | $217,298 (+2%) Land $48,724 Building $168,574 | |
| 2025 | $2,879.00 (+6.04%) Homeowner's exemption | $213,038 (+4.04%) Land $47,769 Building $165,269 |
| 2023 | $2,715.00 (+1.46%) Homeowner's exemption | $204,767 Land $45,915 Building $158,852 |
| 2022 | $2,676.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond ember reach |
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 645 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 | 100 / 20 |
May also be available: Verizon.
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