Contra Costa County property record for 3644 Otter Brook Loop, Discovery Bay, CA 94505
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 3,066 sqft · built 2003 |
| Lot Size | 0.149 acres (6,500 sqft) |
| Owner | Company Name on Record |
| Last Sale | $443,500 (Nov 2003) |
| Tax Bill | $9,013 (2025) |
| Flood Zone | Zone X (moderate risk) |
| APN | 011-430-074-2 |
| Primary APN | 011-430-074-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 3,066 sqft Living Area |
| 1st Floor Area | 2,170 sqft |
| 2nd Floor Area | 896 sqft |
| Year Built | Built 2003 |
|---|---|
| Effective Year Built | Effective 2003 |
| Architectural Style | Cluster |
| Lot Area | 6,500 sqft (0.149 acres) |
| View / Lot | Lake |
| Garage Type | Attached |
| Garage Area | 639 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 3644 OTTER BROOK LOOP |
|---|---|
| City | DISCOVERY BAY |
| State | CA |
| Zip | 94505-1843 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | P1 |
| Legal Description | T8428 L74 |
| Legal Tract | 8428 |
| Legal Lot Number | 74 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3004 |
| Census Tract | 304007 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 3644 OTTER BROOK LOOP, DISCOVERY BAY, CA 94505-1843 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 13, 2003 · Amount on Record |
| Deed Sale | Nov 13, 2003 · Amount on Record |
| Prior Sale | Nov 7, 2003 · Amount on Record |
| Deed Document Number | 2003556760 |
| Last Transfer Date | Nov 19, 2007 |
| Transfer Doc | 0000346603 |
| 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 | $642,577 (+2%) Land $181,269 Building $461,308 | |
| 2025 | $9,013.00 (+6.74%) Homeowner's exemption | $629,978 (+4.04%) Land $177,715 Building $452,263 |
| 2023 | $8,444.00 (+1.67%) Homeowner's exemption | $605,517 Land $170,815 Building $434,702 |
| 2022 | $8,305.00 |
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 moderate risk |
|---|---|
| 500-Year Floodplain | Yes 0.2% annual chance |
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 2 in force |
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 | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond ember reach |
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 226 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 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: AT&T, T-Mobile.
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