Contra Costa County property record for 133 Topaz Ct, Hercules, CA 94547
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 3 ba · 2,346 sqft · built 1988 |
| Lot Size | 0.218 acres (9,500 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $8,391 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 407-093-028-6 |
| Primary APN | 407-093-028-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 12 Rooms |
| Stories | 2 Stories |
| Building Area | 2,346 sqft Living Area |
| 1st Floor Area | 1,334 sqft |
| 2nd Floor Area | 1,012 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1988 |
|---|---|
| Effective Year Built | Effective 1988 |
| Architectural Style | Mediterranean |
| Lot Area | 9,500 sqft (0.218 acres) |
| Garage Type | Attached |
| Garage Area | 739 sqft |
| Parking Spaces | 3 Parking Spaces |
| Porch | Porch |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Street Address | 133 TOPAZ CT |
|---|---|
| City | HERCULES |
| State | CA |
| Zip | 94547-1751 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | T06157 L0050 B |
| Legal Tract | 06157 |
| Legal Lot Number | 50 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 359204 |
133 Topaz Ct is owner-occupied and held in a trust since October 2011.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 133 TOPAZ CT, HERCULES, CA 94547-1751 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Oct 13, 2011 |
| Transfer Doc | 0000012690 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 133 Topaz Ct was $8,391 with a homeowner's exemption.
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 | $528,232 (+2%) Land $193,167 Building $335,065 | |
| 2025 | $8,391.00 Homeowner's exemption | $517,876 Land $189,380 Building $328,496 |
| 2023 | $7,911.00 (+1.15%) Homeowner's exemption | $497,768 Land $182,027 Building $315,741 |
| 2022 | $7,821.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 133 Topaz Ct in Zone X, an area of minimal flood risk.
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.
Wildfire risk around 133 Topaz Ct is low, with a 0.04% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 66% of the US · lower than 80% of California |
|---|---|
| Wildfire Likelihood | 0.04% annual chance |
| Exposure | Direct burnable vegetation |
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 403 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 · Fiber in parts of the area | 100 / 20 |
May also be available: T-Mobile, Unwired.
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