Contra Costa County property record for 166 Emerald Way, Hercules, CA 94547 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,931 sqft · built 1989 |
| Lot Size | 0.175 acres (7,623 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $240,000 (Dec 1993) |
| Tax Bill | $6,948 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 407-093-009-6 |
| Primary APN | 407-093-009-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 1,931 sqft Living Area |
| 1st Floor Area | 1,195 sqft |
| 2nd Floor Area | 736 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1989 |
|---|---|
| Effective Year Built | Effective 1989 |
| Lot Area | 7,623 sqft (0.175 acres) |
| Garage Type | Attached |
| Garage Area | 507 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Street Address | 166 EMERALD WAY |
|---|---|
| City | HERCULES |
| State | CA |
| Zip | 94547-1755 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T06157 L0031 B |
| Legal Tract | 06157 |
| Legal Lot Number | 31 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | WEST CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 359204 |
Source: Contra Costa County records · APN 407-093-009-6
Assessment roll updated July 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 166 EMERALD WAY, HERCULES, CA 94547-1755 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Dec 07, 1993 · Amount on Record |
| Deed Sale | Dec 07, 1993 · Amount on Record |
| Deed Document Number | 1993347721 |
| Deed Book / Page | 19237 / 919 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Hercules City |
| Unified School District | West Contra Costa Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $416,067 (+2%) Land $167,808 Building $248,259 | |
| 2025 | $6,948.00 (+6.43%) Homeowner's exemption | $407,910 (+4.04%) Land $164,518 Building $243,392 |
| 2023 | $6,528.00 (+1.18%) Homeowner's exemption | $392,073 Land $158,131 Building $233,942 |
| 2022 | $6,452.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133592043, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Nearby Flood Policies | 1 in force |
| Wildfire Risk | Low above 34% of the US · above 20% of California |
|---|---|
| Wildfire Likelihood | About 1 in 2,500 per year |
| Exposure | Direct burnable vegetation at the parcel |
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: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 403 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| Verizon | Fixed Wireless | 300 / 20 |
| AT&T | DSL | 100 / 20 |
May also be available at this address: Unwired, T-Mobile USA, AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.
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