Contra Costa County property record for 3447 Keystone Loop, Discovery Bay, CA 94505 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 3 Baths |
| Year Built | Built 2003 |
| Square Footage | 2,562 sqft Living Area |
| Lot Size | 6,500 sqft (0.149 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $281,000 (2010) |
| Tax Bill | $6,053.00 (2025) |
| Primary APN | 011-421-008-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Building Area | 2,562 sqft Living Area |
| 1st Floor | 2,562 sqft 1st Floor |
| Stories | 1 Stories |
| Year Built | Built 2003 |
|---|---|
| Effective Year Built | Effective 2003 |
| Architectural Style | Cluster Style |
| Lot Area | 6,500 sqft (0.149 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 495 sqft Garage |
| Cooling System | Central Cooling |
|---|
| Street Address | 3447 KEYSTONE LOOP |
|---|---|
| City | DISCOVERY BAY |
| State | CA |
| Zip | 94505-2320 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | T8430 L8 |
| Legal Subdivision | LAKESHORE 4 |
| Legal Tract | 8430 |
| Legal Lot Number | 8 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | EAST CONTRA COSTA |
| Census Blockgroup | 3 |
| Census Block | 3001 |
| Census Tract | 304007 |
Source: Contra Costa County records · APN 011-421-008-1
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 | Company Name on File |
|---|---|
| Mailing Address | 3447 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2320 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is a Company |
| Vesting | Owner is a Trust, Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Dec 06, 2010 · Amount on Record |
| Deed Sale | Dec 06, 2010 · Amount on Record |
| Prior Sale | Jan 29, 2008 · Amount on Record |
| Deed Doc Number | 2010274354 |
| Last Transfer Date | Dec 11, 2015 |
| Transfer Doc | 0000260838 |
| Record Refreshed | 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 |
| Elementary School District | Byron Union Elementary School District (KG - 08) |
| Secondary School District | Liberty Union High School District (09 - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $367,198 (+2%) Land $29,396 Building $337,802 | |
| 2025 | $6,053.00 (+7.65%) Homeowner's exemption | $359,999 (+4.04%) Land $28,820 Building $331,179 |
| 2023 | $5,623.00 (+1.7%) Homeowner's exemption | $346,021 Land $27,701 Building $318,320 |
| 2022 | $5,529.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Moderate |
| 500-Year Floodplain | Yes |
| Special Flood Hazard Area | No |
| Nearest Special Flood Hazard Area | Zone AE, within 500 ft |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures