Contra Costa County property record for 1011 Seneca Ct, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 2.5 ba · 2,610 sqft · built 1972 |
| Lot Size | 0.253 acres (11,000 sqft) |
| Owner | Trust Name on File |
| Last Sale | $900,000 (Feb 2011) |
| Tax Bill | $5,288 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 139-033-006-4 |
| Primary APN | 139-033-006-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 11 Rooms |
| Stories | 1 Story |
| Building Area | 2,610 sqft Living Area |
| Gross Area | 3,189 sqft |
| 1st Floor Area | 2,610 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1972 |
|---|---|
| Effective Year Built | Effective 1980 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 11,000 sqft (0.253 acres) |
| Garage Type | Attached |
| Garage Area | 579 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 1011 SENECA CT |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-4337 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R12 |
| Legal Description | TRACT 4126 LOT 18 |
| Legal Subdivision | WALNUT WALK II |
| Legal Tract | 4126 |
| Legal Lot Number | 18 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1016 |
| Census Tract | 338302 |
1011 Seneca Ct is held in a trust since February 2011.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 1011 SENECA CT, WALNUT CREEK, CA 94598-4337 |
| 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 | Feb 28, 2011 · Amount on File |
| Deed Sale | Feb 28, 2011 · Amount on File |
| Deed Document Number | 201143205 |
| Prior Transfer Date | Oct 7, 1993 |
| Prior Transfer Doc | 0000285614 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 1011 Seneca Ct was $5,288.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Walnut Creek City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $407,005 (+2%) Land $122,422 Building $284,583 | |
| 2025 | $5,288.00 | $399,025 Land $120,022 Building $279,003 |
| 2023 | $5,070.00 (+0.88%) | $383,532 Land $115,362 Building $268,170 |
| 2022 | $5,026.00 |
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 1011 Seneca Ct in Zone X, an area of minimal flood risk.
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 minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 1 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.
Wildfire risk around 1011 Seneca Ct is high, ranking above 73% of the US, with a 0.3% 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 | 0.3% annual chance |
| Exposure | Direct burnable vegetation |
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 | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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 54 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
May also be available: Verizon.
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