Contra Costa County property record for 539 Black Walnut Pl, Hercules, CA 94547 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,411 sqft · built 2003 |
| Lot Size | 0.085 acres (3,680 sqft) |
| Owner | Company Name on File |
| Last Sale | $511,000 (Mar 2003) |
| Tax Bill | $11,132 (2025) |
| Deeds & Mortgages | Mar 2017 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 406-540-056-8 |
| Primary APN | 406-540-056-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,411 sqft Living Area |
| 1st Floor Area | 1,432 sqft |
| 2nd Floor Area | 979 sqft |
| Year Built | Built 2003 |
|---|---|
| Effective Year Built | Effective 2003 |
| Lot Area | 3,680 sqft (0.085 acres) |
| Garage Type | Attached |
| Garage Area | 436 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 539 BLACK WALNUT PL |
|---|---|
| City | HERCULES |
| State | CA |
| Zip | 94547-2301 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8630 L20 |
| Legal Tract | 8630 |
| Legal Lot Number | 20 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1001 |
| Census Tract | 359203 |
Source: Contra Costa County records · APN 406-540-056-8
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 | Company Name on File |
|---|---|
| Mailing Address | 394 ODIN PL, PLEASANT HILL, CA 94523-1803 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Mar 18, 2003 · Amount on Record |
| Deed Sale | Mar 18, 2003 · Amount on Record |
| Deed Document Number | 2003121885 |
| Last Transfer Date | Dec 29, 2016 |
| Transfer Doc | 0000037160 |
| Record Updated | Sep 20, 2026 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Mar 01, 2017 |
| Property Address | 539 BLACK WALNUT PL, HERCULES, CA 94547-2301 |
| Document Number | 0000037160 |
| Instrument Date | Dec 29, 2016 |
| Instrument | 37160 |
| Transaction Type | Transfer |
| Record Updated | Mar 20, 2017 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 394 ODIN PL PLEASANT HILL CA 945231803, PLEASANT HILL, CA 94523-1803 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Hercules City |
| Unified School District | West Contra Costa 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 | $754,287 (+2%) Land $296,335 Building $457,952 | |
| 2025 | $11,132.00 (+5.68%) | $739,498 (+4.04%) Land $290,525 Building $448,973 |
| 2023 | $10,534.00 (+1.11%) | $710,785 Land $279,245 Building $431,540 |
| 2022 | $10,418.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 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 |
| Wildfire Risk | Moderate above 40% of the US · above 24% of California |
|---|---|
| Wildfire Likelihood | About 1 in 1,429 per year |
| Exposure | Direct burnable vegetation at the parcel |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 373 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fixed Wireless | 300 / 20 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
| AT&T | DSL | 100 / 20 |
| Starlink | Satellite (low-earth orbit) | 280 / 30 |
May also be available at this address: Unwired. Availability varies by address; speeds are provider-advertised maximums, not measured.
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