Contra Costa County property record for 3539 Keystone Loop, Discovery Bay, CA 94505 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 2 Baths |
| Year Built | Built 2004 |
| Square Footage | 2,033 sqft Living Area |
| Lot Size | 6,500 sqft (0.149 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $395,000 (2004) |
| Tax Bill | $8,311.00 (2025) |
| Primary APN | 011-421-023 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Building Area | 2,033 sqft Living Area |
| 1st Floor | 2,033 sqft 1st Floor |
| Stories | 1 Stories |
| Year Built | Built 2003 |
|---|---|
| Effective Year Built | Effective 2004 |
| Architectural Style | Cluster Style |
| Lot Area | 6,500 sqft (0.149 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 482 sqft Garage |
| Cooling System | Central Cooling |
|---|
| Street Address | 3539 KEYSTONE LOOP |
|---|---|
| City | DISCOVERY BAY |
| State | CA |
| Zip | 94505-2322 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | T8430 POR LOTS 23 & 22 |
| Legal Subdivision | SUBDIVISION 8430 |
| Legal Tract | 8430 |
| Legal Lot Number | 23,22 |
| 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 011-421-023
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 | 3539 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Community Property |
| Date | Document |
|---|---|
| May 07, 2018 | Deed of Trust, Mortgage · Conventional Mortgage CMG MORTGAGE INC |
| Mar 16, 2020 | Deed of Trust, Mortgage · Conventional Mortgage CMG MORTGAGE INC |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | May 14, 2004 · Amount on Record |
| Deed Sale | May 14, 2004 · Amount on Record |
| Deed Doc Number | 2004180851 |
| Prior Transfer Date | Oct 16, 2002 |
| Prior Transfer Doc | 0000401496 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 3539 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Name | Verified Name |
|---|
| Document Number | 0000071169 |
|---|---|
| Date | May 07, 2018 |
| Instrument | 2018-071169 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Address | SAN RAMON, CA 94583 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jun 01, 2048 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 3539 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Name | Verified Name |
|---|
| Document Number | 0000049580 |
|---|---|
| Date | Mar 16, 2020 |
| Instrument | 2020-049580 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Address | SAN RAMON, CA 94583 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Apr 01, 2050 |
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 | $577,218 (+2%) Land $143,560 Building $433,658 | |
| 2025 | $8,311.00 (+6.89%) Homeowner's exemption | $565,901 (+4.04%) Land $140,746 Building $425,155 |
| 2023 | $7,775.00 (+1.69%) Homeowner's exemption | $543,929 Land $135,282 Building $408,647 |
| 2022 | $7,646.00 |
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 A, 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.
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