Contra Costa County property record for 426 Constantine Ct, San Ramon, CA 94583
| Property Type | Duplex |
|---|---|
| Details | 5 bd · 4 ba · 2,468 sqft · built 2006 |
| Lot Size | 0.071 acres (3,103 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $867,000 (Dec 2006) |
| Tax Bill | $14,137 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 208-740-053-3 |
| Primary APN | 208-740-053-3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 2,468 sqft Living Area |
| 1st Floor Area | 911 sqft |
| 2nd Floor Area | 1,557 sqft |
| Year Built | Built 2006 |
|---|---|
| Effective Year Built | Effective 2006 |
| Architectural Style | Duplex Single |
| Lot Area | 3,103 sqft (0.071 acres) |
| Garage Type | Attached |
| Garage Area | 729 sqft |
| Parking Spaces | 3 Parking Spaces |
| Street Address | 426 CONSTANTINE CT |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94583-3520 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Duplex |
| Legal Description | T8797 L53 |
| Legal Subdivision | LAUDERHILL |
| Legal Tract | 8797 |
| Legal Lot Number | 53 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2005 |
| Census Tract | 345205 |
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 Company Names on Record |
|---|---|
| Mailing Address | 426 CONSTANTINE CT, SAN RAMON, CA 94583-3520 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Dec 7, 2006 · Amount on Record |
| Deed Sale | Dec 7, 2006 · Amount on Record |
| Deed Document Number | 2006390623 |
| Last Transfer Date | Aug 7, 2013 |
| Transfer Doc | 0000202778 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | San Ramon City |
| Unified School District | San Ramon Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,184,128 (+2%) Land $554,824 Building $629,304 | |
| 2025 | $14,137.00 (+3.26%) Homeowner's exemption | $1,160,911 (+4.04%) Land $543,946 Building $616,965 |
| 2023 | $13,691.00 (+0.2%) Homeowner's exemption | $1,115,833 Land $522,825 Building $593,008 |
| 2022 | $13,663.00 |
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
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone A, within 500 ft |
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 59% of the US · lower than 64% of California |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Indirect within 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 | EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Dec 2021 |
| 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. This system sells water to local utilities; the supplier billing this address may be one of them.
Source: FCC Broadband Data Collection, based on 539 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Verizon Fixed Wireless | 1,000 / 75 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
May also be available: AT&T, T-Mobile.
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