Contra Costa County property record for 317 Downham Ct, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 2,089 sqft · built 1976 |
| Lot Size | 0.276 acres (12,000 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $599,000 (Jun 2013) |
| Tax Bill | $3,448 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 143-103-023-6 |
| Primary APN | 143-103-023-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 2,089 sqft Living Area |
| Gross Area | 2,643 sqft |
| 1st Floor Area | 2,089 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1976 |
|---|---|
| Effective Year Built | Effective 1983 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 12,000 sqft (0.276 acres) |
| Garage Type | Attached |
| Garage Area | 554 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 317 DOWNHAM CT |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-2319 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | T04591 L0035 B |
| Legal Tract | 04591 |
| Legal Lot Number | 35 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2021 |
| Census Tract | 338201 |
317 Downham Ct is owner-occupied and held in a trust since June 2013.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 317 DOWNHAM CT, WALNUT CREEK, CA 94598-2319 |
| 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 | 2 Names on Deed |
|---|---|
| Last Sale | Jun 14, 2013 · Amount on File |
| Deed Sale | Jun 14, 2013 · Amount on File |
| Deed Document Number | 2013151124 |
| Prior Transfer Date | Aug 19, 2010 |
| Prior Transfer Doc | 0000172379 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 317 Downham Ct was $3,448 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 | Walnut Creek City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $244,009 (+2%) Land $56,519 Building $187,490 | |
| 2025 | $3,448.00 Homeowner's exemption | $239,225 Land $55,411 Building $183,814 |
| 2023 | $3,295.00 (+0.92%) Homeowner's exemption | $229,937 Land $53,260 Building $176,677 |
| 2022 | $3,265.00 |
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 317 Downham 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 | 2 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.
The area around 317 Downham Ct has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land 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 | 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 369 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Cable · Fiber in parts of the area | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Etheric Networks, Sonic Telecom, T-Mobile.
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