Contra Costa County property record for 3516 Keystone Loop, Discovery Bay, CA 94505 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 5 Beds |
| Bathrooms | 4 Baths |
| Year Built | Built 2004 |
| Square Footage | 4,011 sqft Living Area |
| Lot Size | 6,800 sqft (0.156 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $392,500 (2008) |
| Tax Bill | $7,648.00 (2025) |
| Primary APN | 011-421-033-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 12 Rooms |
| Building Area | 4,011 sqft Living Area |
| 1st Floor | 1,984 sqft 1st Floor |
| 2nd Floor | 2,027 sqft 2nd Floor |
| Stories | 2 Stories |
| Year Built | Built 2003 |
|---|---|
| Effective Year Built | Effective 2004 |
| Architectural Style | Cluster Style |
| Lot Area | 6,800 sqft (0.156 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 438 sqft Garage |
| Cooling System | Central Cooling |
|---|
| Street Address | 3516 KEYSTONE LOOP |
|---|---|
| City | DISCOVERY BAY |
| State | CA |
| Zip | 94505-2321 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | T8430 L33 |
| Legal Subdivision | LAKESHORE 4 |
| Legal Tract | 8430 |
| Legal Lot Number | 33 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | EAST CONTRA COSTA |
| Census Blockgroup | 3 |
| Census Block | 3003 |
| Census Tract | 304007 |
Source: Contra Costa County records · APN 011-421-033-9
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 | 3516 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2321 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Oct 08, 2008 · Amount on Record |
| Deed Sale | Oct 08, 2008 · Amount on Record |
| Prior Sale | May 21, 2008 · Amount on Record |
| Deed Doc Number | 2008220277 |
| Prior Transfer Date | Aug 08, 2005 |
| Prior Transfer Doc | 0000309757 |
| 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 | $515,538 (+2%) Land $88,653 Building $426,885 | |
| 2025 | $7,648.00 (+7.07%) Homeowner's exemption | $505,430 (+4.04%) Land $86,915 Building $418,515 |
| 2023 | $7,143.00 (+1.69%) Homeowner's exemption | $485,805 Land $83,541 Building $402,264 |
| 2022 | $7,024.00 |
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