Contra Costa County property record for 31 Supreme Ct, Walnut Creek, CA 94597 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 4 ba · 2,308 sqft · built 1956 |
| Lot Size | 0.241 acres (10,476 sqft) |
| Owner | Company Name on File |
| Tax Bill | $2,597 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 171-100-003-2 |
| Primary APN | 171-100-003-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 2,308 sqft Living Area |
| 1st Floor Area | 1,633 sqft |
| 2nd Floor Area | 675 sqft |
| Year Built | Built 1956 |
|---|---|
| Effective Year Built | Effective 1967 |
| Lot Area | 10,476 sqft (0.241 acres) |
| Garage Type | Attached |
| Garage Area | 399 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 31 SUPREME CT |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94597-2636 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | LARKEY RANCH SUBN #2 POR LOT 29 |
| Legal Subdivision | LARKEY RANCH SUB |
| Legal Lot Number | 29 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 340001 |
Source: Contra Costa County records · APN 171-100-003-2
Assessment roll updated July 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 31 SUPREME CT, WALNUT CREEK, CA 94597-2636 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Walnut Creek City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $165,332 (+2%) Land $31,227 Building $134,105 | |
| 2025 | $2,597.00 (+4.97%) Homeowner's exemption | $162,091 (+4.04%) Land $30,615 Building $131,476 |
| 2023 | $2,474.00 (+0.9%) Homeowner's exemption | $155,799 Land $29,427 Building $126,372 |
| 2022 | $2,452.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133400013, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Community Rating System | Class 8 (10% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 2 (1980–1998) |
| Claims Outside the SFHA | 1 of 2 |
| Most Recent Claim | Feb 1998, rainfall accumulation, Severe Winter Storms And Flooding |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
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.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 520 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 250 |
| Radiate Holdings | Cable | 1,500 / 50 |
| Unwired | Fixed Wireless | 300 / 25 |
| Verizon | Fixed Wireless | 300 / 20 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
| AT&T | DSL | 100 / 20 |
May also be available at this address: Sonic Telecom, AT&T, Radiate Holdings. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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