Contra Costa County property record for 9 Knoll Ct, Hercules, CA 94547
| Property Type | Townhouse |
|---|---|
| Details | 2 bd · 2 ba · 1,164 sqft · built 1980 |
| Lot Size | 0.069 acres (2,992 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $300,000 (Jun 2003) |
| Tax Bill | $7,127 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 406-472-015-6 |
| Primary APN | 406-472-015-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,164 sqft Living Area |
| 1st Floor Area | 1,164 sqft |
| Year Built | Built 1980 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Townhouse |
| Lot Area | 2,992 sqft (0.069 acres) |
| Garage Type | Attached |
| Garage Area | 399 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Central |
|---|
| Street Address | 9 KNOLL CT |
|---|---|
| City | HERCULES |
| State | CA |
| Zip | 94547-1430 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | PUD |
| Legal Description | T05100 L0061 B |
| Legal Tract | 05100 |
| Legal Lot Number | 61 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3004 |
| Census Tract | 359203 |
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 | 9 KNOLL CT, HERCULES, CA 94547-1430 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 13, 2003 · Amount on Record |
| Deed Sale | Jun 13, 2003 · Amount on Record |
| Prior Sale | Dec 17, 1999 · Amount on Record |
| Deed Document Number | 2003277768 |
| Prior Transfer Date | Nov 24, 1999 |
| Prior Transfer Doc | 0000324879 |
| Record Updated | Oct 29, 2026 |
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 | $443,165 (+2%) Land $147,716 Building $295,449 | |
| 2025 | $7,127.00 (+6.45%) Homeowner's exemption | $434,476 (+4.04%) Land $144,820 Building $289,656 |
| 2023 | $6,695.00 (+1.15%) Homeowner's exemption | $417,607 Land $139,198 Building $278,409 |
| 2022 | $6,619.00 |
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 AO, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Nearby Flood Policies | 1 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 693 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 DSL | 100 / 20 |
May also be available: T-Mobile, Unwired.
5G (outdoors only) and 4G LTE
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