Contra Costa County property record for 251 Walnut Ave, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 3 ba · 1,507 sqft · built 1959 |
| Lot Size | 0.241 acres (10,500 sqft) |
| Owner | 2 Company Names on Record |
| Last Sale | $345,000 (Jun 1998) |
| Tax Bill | $6,899 (2025) |
| Deeds & Mortgages | Apr 2023 Construction Loan |
| Flood Zone | Zone X (minimal risk) |
| APN | 140-031-003-1 |
| Primary APN | 140-031-003-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,507 sqft Living Area |
| 1st Floor Area | 1,507 sqft |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1975 |
| Lot Area | 10,500 sqft (0.241 acres) |
| Garage Type | Attached |
| Garage Area | 460 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 251 WALNUT AVE |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-3372 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | TRACT 2650 3 |
| Legal Subdivision | TRACT 2650 |
| Legal Tract | 2650 |
| Legal Lot Number | 3 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3000 |
| Census Tract | 338302 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 251 WALNUT AVE, WALNUT CREEK, CA 94598-3372 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 16, 1998 · Amount on Record |
| Deed Sale | Jun 16, 1998 · Amount on Record |
| Deed Document Number | 1998137208 |
| Last Transfer Date | Aug 15, 2024 |
| Transfer Doc | 0000082279 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 251 WALNUT AVE, WALNUT CREEK, CA 94598-3372 |
| Transaction Type | Mortgage |
| Record Updated | Apr 18, 2023 |
| Title Company | SERVICELINK |
| Name | Verified Name |
|---|---|
| Address | 251 WALNUT AVE, WALNUT CREEK, CA 94598-3372 |
| Document Number | 0000032412 |
|---|---|
| Date | Apr 7, 2023 |
| Instrument | 2023-032412 |
| Name | DISCOVER BANK |
|---|---|
| Type | Bank |
| Address | GREENWOOD, DE 19950 |
| Type | Construction Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Apr 6, 2053 |
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 | $563,368 (+2%) Land $270,430 Building $292,938 | |
| 2025 | $6,899.00 (+4.5%) Homeowner's exemption | $552,323 (+4.32%) Land $265,128 Building $287,195 |
| 2023 | $6,602.00 (+0.89%) Homeowner's exemption | $529,466 Land $254,834 Building $274,632 |
| 2022 | $6,544.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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 |
| Nearby Flood Claims | 1 (1983) |
| Most Recent Claim | Dec 1983 · tidal / storm surge |
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: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 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 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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