Contra Costa County property record for 10 Crystal Cir, Hercules, CA 94547
| Property Type | Townhouse |
|---|---|
| Details | 2 bd · 2.5 ba · 1,274 sqft · built 1983 |
| Lot Size | 0.077 acres (3,360 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $420,000 (Sep 2016) |
| Tax Bill | $8,438 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 407-020-003-7 |
| Primary APN | 407-020-003-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 2 Stories |
| Building Area | 1,274 sqft Living Area |
| 1st Floor Area | 632 sqft |
| 2nd Floor Area | 642 sqft |
| Year Built | Built 1983 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Townhouse |
| Lot Area | 3,360 sqft (0.077 acres) |
| Garage Type | Attached |
| Garage Area | 492 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 10 CRYSTAL CIR |
|---|---|
| City | HERCULES |
| State | CA |
| Zip | 94547-1703 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Townhouse |
| Local Zoning Code | R1 |
| Legal Description | T05302 L0003 B |
| Legal Tract | 05302 |
| Legal Lot Number | 3 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3001 |
| Census Tract | 359204 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 10 CRYSTAL CIR, HERCULES, CA 94547-1703 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Sep 6, 2016 · Amount on Record |
| Deed Sale | Sep 6, 2016 · Amount on Record |
| Prior Sale | Dec 15, 2009 · Amount on Record |
| Deed Document Number | 2016180425 |
| Prior Transfer Date | Aug 22, 2002 |
| Prior Transfer Doc | 0000301210 |
| 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 | $497,188 (+2%) Land $260,432 Building $236,756 | |
| 2025 | $8,438.00 (+3.74%) Homeowner's exemption | $487,440 (+4.04%) Land $255,326 Building $232,114 |
| 2023 | $8,134.00 (+1.06%) Homeowner's exemption | $468,513 Land $245,412 Building $223,101 |
| 2022 | $8,049.00 |
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 | 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 232 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Unwired.
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