Contra Costa County property record for 56 Sioux Ln, San Ramon, CA 94583
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 3,303 sqft · built 1985 |
| Lot Size | 0.275 acres (11,984 sqft) |
| Owner | Trust Name on File |
| Last Sale | $370,000 (Mar 1996) |
| Tax Bill | $10,312 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 209-721-036-9 |
| Primary APN | 209-721-036-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 12 Rooms |
| Stories | 2 Stories |
| Building Area | 3,303 sqft Living Area |
| 1st Floor Area | 2,435 sqft |
| 2nd Floor Area | 868 sqft |
| Year Built | Built 1985 |
|---|---|
| Effective Year Built | Effective 2000 |
| Architectural Style | Cluster |
| Lot Area | 11,984 sqft (0.275 acres) |
| Garage Type | Attached |
| Garage Area | 474 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 56 SIOUX LN |
|---|---|
| City | SAN RAMON |
| State | CA |
| Zip | 94583-4301 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | P1 |
| Legal Description | REC OF SURVEY 75 LSM 5 L133 |
| Legal Subdivision | MAP OF SUBDIVISION 5815 |
| Legal Tract | 75LS5 |
| Legal Lot Number | 133 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1009 |
| Census Tract | 345115 |
56 Sioux Ln is owner-occupied and held in a trust since December 2010.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 56 SIOUX LN, SAN RAMON, CA 94583-4301 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | 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 | Name on Deed |
|---|---|
| Last Sale | Mar 19, 1996 · Amount on File |
| Deed Sale | Mar 19, 1996 · Amount on File |
| Deed Document Number | 199649196 |
| Last Transfer Date | Dec 28, 2010 |
| Transfer Doc | 0000005650 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 56 Sioux Ln was $10,312 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 | $877,644 (+2%) Land $237,217 Building $640,427 | |
| 2025 | $10,312.00 Homeowner's exemption | $860,436 Land $232,566 Building $627,870 |
| 2023 | $9,929.00 (+0.76%) Homeowner's exemption | $827,026 Land $223,536 Building $603,490 |
| 2022 | $9,854.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 56 Sioux Ln 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 56 Sioux Ln is high, ranking above 73% of the US, with a 0.4% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 73% of the US · above 49% of California |
|---|---|
| Wildfire Likelihood | 0.4% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 372 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 |
| Verizon Fixed Wireless | 300 / 20 |
May also be available: Etheric Networks, T-Mobile.
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