Contra Costa County property record for 1151 Williams, Hercules, CA 94547
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 1,829 sqft · built 1986 |
| Lot Size | 0.131 acres (5,700 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $917,000 (Jun 2024) |
| Tax Bill | $13,811 (2025) |
| Deeds & Mortgages | Sep 2021 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 404-071-022-2 |
| Primary APN | 404-071-022-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 1,829 sqft Living Area |
| 1st Floor Area | 985 sqft |
| 2nd Floor Area | 844 sqft |
| Year Built | Built 1986 |
|---|---|
| Effective Year Built | Effective 1987 |
| Architectural Style | Cluster |
| Lot Area | 5,700 sqft (0.131 acres) |
| Garage Type | Attached |
| Garage Area | 447 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 1151 WILLIAMS |
|---|---|
| City | HERCULES |
| State | CA |
| Zip | 94547-3733 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | T5337A L0022 B |
| Legal Subdivision | SUBDIVISION 5337 |
| Legal Tract | 5337A |
| Legal Lot Number | 0022 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2029 |
| Census Tract | 359105 |
Source: Contra Costa County records, 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 | Individual Name on Record |
|---|---|
| Mailing Address | 1151 WILLIAMS, HERCULES, CA 94547-3733 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 13, 2024 · Amount on Record |
| Deed Sale | Jun 13, 2024 · Amount on Record |
| Prior Sale | Sep 22, 2021 · Amount on Record |
| Deed Document Number | 202456203 |
| Prior Transfer Date | Nov 1, 2004 |
| Prior Transfer Doc | 0000000874 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 22, 2021 |
| Property Address | 1151 WILLIAMS, HERCULES, CA 94547-3733 |
| Document Number | 0000263939 |
| Map Reference | MB 273 PG 28 |
| Instrument Date | Sep 16, 2021 |
| Instrument | 2021-263939 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| 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 | 1151 WILLIAMS, HERCULES, CA 94547-3733 |
| Document Number | 0000263940 |
|---|---|
| Date | Sep 22, 2021 |
| Instrument | 2021-263940 |
| Name | CHANGE LENDING LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Oct 1, 2051 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Hercules City |
| Unified School District | West Contra Costa Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $954,046 (+2%) Land $485,866 Building $468,180 | |
| 2025 | $13,811.00 (-5.98%) | $935,340 (+9.17%) Land $476,340 Building $459,000 |
| 2023 | $14,689.00 (+0.96%) | $856,800 Land $448,800 Building $408,000 |
| 2022 | $14,550.00 |
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 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 5 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.
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 |
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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 505 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Sonic Telecom, Unwired.
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