Contra Costa County property record for 804 Winterside Cir, San Ramon, CA 94583
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,887 sqft · built 1990 |
| Lot Size | 0.08 acres (3,500 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $560,000 (Aug 2010) |
| Tax Bill | $8,883 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 213-720-068-5 |
| Primary APN | 213-720-068-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 1,887 sqft Living Area |
| 1st Floor Area | 824 sqft |
| 2nd Floor Area | 1,063 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1990 |
|---|---|
| Effective Year Built | Effective 1990 |
| Architectural Style | Ranch |
| Exterior Material | Wood Siding |
| Roof Material | Wood Shingle |
| Lot Area | 3,500 sqft (0.08 acres) |
| Garage Type | Attached |
| Garage Area | 434 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 804 WINTERSIDE CIR |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94583-5236 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R-10 |
| Legal Description | T6648 L68 |
| Legal Subdivision | NEWCASTLE |
| Legal Tract | 6648 |
| Legal Lot Number | 68 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2004 |
| Census Tract | 345111 |
804 Winterside Cir is owned and occupied by two individuals who bought it in August 2010.
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 | 2 Individual Names on File |
|---|---|
| Mailing Address | 804 WINTERSIDE CIR, SAN RAMON, CA 94583-5236 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 3, 2010 · Amount on File |
| Deed Sale | Aug 3, 2010 · Amount on File |
| Prior Sale | Feb 26, 2002 · Amount on File |
| Deed Document Number | 2010155615 |
| Prior Transfer Date | Apr 24, 2009 |
| Prior Transfer Doc | 0000097542 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 804 Winterside Cir was $8,883 with a homeowner's exemption.
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 | $731,796 (+2%) Land $499,845 Building $231,951 | |
| 2025 | $8,883.00 Homeowner's exemption | $717,448 Land $490,045 Building $227,403 |
| 2023 | $8,543.00 (+1.03%) Homeowner's exemption | $689,591 Land $471,017 Building $218,574 |
| 2022 | $8,456.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 804 Winterside Cir 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 804 Winterside Cir 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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