Contra Costa County property record for 4100 Regatta Dr, Discovery Bay, CA 94505
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,193 sqft · built 1999 |
| Lot Size | 0.083 acres (3,600 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $310,000 (Nov 2002) |
| Tax Bill | $7,179 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 011-331-003-1 |
| Primary APN | 011-331-003-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 2,193 sqft Living Area |
| 1st Floor Area | 1,158 sqft |
| 2nd Floor Area | 1,035 sqft |
| Year Built | Built 1999 |
|---|---|
| Effective Year Built | Effective 2000 |
| Lot Area | 3,600 sqft (0.083 acres) |
| View / Lot | Lake |
| Garage Type | Attached |
| Garage Area | 417 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 4100 REGATTA DR |
|---|---|
| City | DISCOVERY BAY |
| State | CA |
| Zip | 94505-1753 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | P1 |
| Legal Description | T7881 L3 |
| Legal Tract | 7881 |
| Legal Lot Number | 3 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2006 |
| Census Tract | 304007 |
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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 4100 REGATTA DR, DISCOVERY BAY, CA 94505-1753 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Nov 14, 2002 · Amount on Record |
| Deed Sale | Nov 14, 2002 · Amount on Record |
| Prior Sale | Jan 28, 2000 · Amount on Record |
| Deed Document Number | 2002426868 |
| Last Transfer Date | Jul 18, 2006 |
| Transfer Doc | 0000234954 |
| Record Updated | Oct 29, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Elementary School District | Byron Union Elementary School District (KG - 08) |
| Secondary School District | Liberty Union High School District (09 - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $457,942 (+2%) Land $88,626 Building $369,316 | |
| 2025 | $7,179.00 (+7.17%) Homeowner's exemption | $448,964 (+4.04%) Land $86,889 Building $362,075 |
| 2023 | $6,699.00 (+1.72%) Homeowner's exemption | $431,532 Land $83,516 Building $348,016 |
| 2022 | $6,586.00 |
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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (2009) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Oct 2009 · rainfall accumulation |
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 | Moderate above 67% of the US · above 42% of California |
|---|---|
| Wildfire Likelihood | 0.3% 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 | TOWN OF DISCOVERY BAY serves 16,790 people · EPA ID CA0710009 |
|---|---|
| Water Source | Groundwater |
| Last State Inspection | Mar 2023 |
| 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.
Source: FCC Broadband Data Collection, based on 223 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · Fiber in parts of the area | 100 / 20 |
May also be available: Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures