Contra Costa County property record for 473 Walnut Ave, Walnut Creek, CA 94598
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,778 sqft · built 1961 |
| Lot Size | 0.229 acres (9,975 sqft) |
| Owner | Company Name on Record |
| Last Sale | $236,000 (Jun 1996) |
| Tax Bill | $5,065 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 140-012-012-5 |
| Primary APN | 140-012-012-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,778 sqft Living Area |
| 1st Floor Area | 1,778 sqft |
| Year Built | Built 1961 |
|---|---|
| Effective Year Built | Effective 1961 |
| Lot Area | 9,975 sqft (0.229 acres) |
| Garage Type | Attached |
| Garage Area | 452 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 473 WALNUT AVE |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94598-3750 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R10 |
| Legal Description | TRACT 2895 LOT 128 |
| Legal Subdivision | WALNUT CREEK ACRES UNIT #1 |
| Legal Tract | 2895 |
| Legal Lot Number | 128 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3019 |
| Census Tract | 338302 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Company Name on Record |
|---|---|
| Mailing Address | 473 WALNUT AVE, WALNUT CREEK, CA 94598-3750 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jun 28, 1996 · Amount on Record |
| Deed Sale | Jun 28, 1996 · Amount on Record |
| Deed Document Number | 1996122344 |
| Last Transfer Date | Jun 13, 2011 |
| Transfer Doc | 0000120313 |
| Record Updated | Sep 20, 2026 |
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 | $399,874 (+2%) Land $237,217 Building $162,657 | |
| 2025 | $5,065.00 (+4.45%) Homeowner's exemption | $392,034 (+4.04%) Land $232,566 Building $159,468 |
| 2023 | $4,849.00 (+0.92%) Homeowner's exemption | $376,813 Land $223,536 Building $153,277 |
| 2022 | $4,805.00 |
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 428 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 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Sonic Telecom.
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