Contra Costa County property record for 25 Winterside Ct, San Ramon, CA 94583
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,651 sqft · built 1993 |
| Lot Size | 0.088 acres (3,840 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $1,325,000 (Nov 2024) |
| Tax Bill | $15,460 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 213-720-109-7 |
| Primary APN | 213-720-109-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,651 sqft Living Area |
| 1st Floor Area | 791 sqft |
| 2nd Floor Area | 860 sqft |
| Year Built | Built 1993 |
|---|---|
| Effective Year Built | Effective 1993 |
| Architectural Style | Cluster |
| Lot Area | 3,840 sqft (0.088 acres) |
| Garage Type | Attached |
| Garage Area | 436 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 25 WINTERSIDE CT |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94583-5250 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T6648 L109 |
| Legal Subdivision | 6648 CITY/SAN RAMON |
| Legal Tract | 6648 |
| Legal Lot Number | 109 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 345111 |
25 Winterside Ct is owner-occupied and held in a trust since November 2024.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 25 WINTERSIDE CT, SAN RAMON, CA 94583-5250 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust, Family Trust |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Nov 7, 2024 · Amount on File |
| Deed Sale | Nov 7, 2024 · Amount on File |
| Prior Sale | Aug 1, 1997 · Amount on File |
| Deed Document Number | 2024120644 |
| Prior Transfer Date | Sep 5, 1995 |
| Prior Transfer Doc | 0000155831 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 25 Winterside Ct was $15,460.
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 | $1,351,500 (+2%) Land $918,000 Building $433,500 | |
| 2025 | $15,460.00 Homeowner's exemption | $1,325,000 Land $900,000 Building $425,000 |
| 2023 | $5,849.00 (+1.16%) | $434,927 Land $214,854 Building $220,073 |
| 2022 | $5,782.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 25 Winterside Ct in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
Wildfire risk around 25 Winterside Ct is low, with less than a 0.01% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 96% of the US · lower than 97.4% of California |
|---|---|
| Wildfire Likelihood | Under 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 | 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 686 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 2,000 |
| Unwired Fixed Wireless | 300 / 25 |
| Etheric Networks Fixed Wireless | 250 / 100 |
| AT&T DSL · Fixed Wireless in parts of the area | 100 / 20 |
May also be available: T-Mobile, Verizon.
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