Contra Costa County property record for 121 Trellis Bay, Hercules, CA 94547
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 4 ba · 3,239 sqft · built 2003 |
| Lot Size | 0.138 acres (6,017 sqft) |
| Owner | Company Name on Record |
| Last Sale | $631,000 (Jan 2004) |
| Tax Bill | $13,862 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 404-520-008-8 |
| Primary APN | 404-520-008-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 3,239 sqft Living Area |
| 1st Floor Area | 1,576 sqft |
| 2nd Floor Area | 1,663 sqft |
| Year Built | Built 2003 |
|---|---|
| Effective Year Built | Effective 2004 |
| Architectural Style | Cluster |
| Lot Area | 6,017 sqft (0.138 acres) |
| Garage Type | Attached |
| Garage Area | 662 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 121 TRELLIS BAY |
|---|---|
| City | HERCULES |
| State | CA |
| Zip | 94547-2653 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8595 L44 |
| Legal Tract | 8595 |
| Legal Lot Number | 44 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1010 |
| Census Tract | 392300 |
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 | Company Name on Record |
|---|---|
| Mailing Address | 121 TRELLIS BAY, HERCULES, CA 94547-2653 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jan 22, 2004 · Amount on Record |
| Deed Sale | Jan 22, 2004 · Amount on Record |
| Deed Document Number | 200421731 |
| Last Transfer Date | Oct 28, 2019 |
| Transfer Doc | 0000192029 |
| 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 | $914,784 (+2%) Land $348,043 Building $566,741 | |
| 2025 | $13,862.00 (+5.81%) Homeowner's exemption | $896,848 (+4.04%) Land $341,219 Building $555,629 |
| 2023 | $13,101.00 (+1.34%) Homeowner's exemption | $862,024 Land $327,970 Building $534,054 |
| 2022 | $12,928.00 |
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 |
|---|---|
| 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 97% of the US · lower than 97.8% of California |
|---|---|
| Wildfire Likelihood | Under 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 613 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Unwired, Verizon.
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