Contra Costa County property record for 4430 Walnut Blvd, Walnut Creek, CA 94596
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3.5 ba · 3,712 sqft · built 1940 |
| Lot Size | 0.961 acres (41,850 sqft) |
| Owner | Trust Name on File |
| Last Sale | $45,500 (May 1999) |
| Tax Bill | $12,507 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 180-330-006-8 |
| Primary APN | 180-330-006-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 2 Stories |
| Building Area | 3,712 sqft Living Area |
| Gross Area | 4,468 sqft |
| 1st Floor Area | 1,763 sqft |
| 2nd Floor Area | 1,949 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1940 |
|---|---|
| Effective Year Built | Effective 1995 |
| Exterior Material | Wood Siding |
| Roof Material | Composition Shingle |
| Lot Area | 41,850 sqft (0.961 acres) |
| Garage Type | Attached |
| Garage Area | 756 sqft |
| Parking Spaces | 3 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 4430 WALNUT BLVD |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94596-6132 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | RA |
| Legal Description | WALNUT HGTS POR LOTS 5 BLK M & 14 BLK 3 .81 |
| Legal Subdivision | WALNUT HEIGHTS |
| Legal Block | M,3 |
| Legal Lot Number | 5 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 343003 |
4430 Walnut Blvd is owner-occupied and held in a trust since May 1999.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 4430 WALNUT BLVD, WALNUT CREEK, CA 94596-6132 |
| 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 | Name on Deed |
|---|---|
| Last Sale | May 20, 1999 · Amount on File |
| Deed Sale | May 20, 1999 · Amount on File |
| Prior Sale | Aug 22, 1995 · Amount on File |
| Deed Document Number | 1999135329 |
| Prior Transfer Date | May 11, 1999 |
| Prior Transfer Doc | 0000135329 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 4430 Walnut Blvd was $12,507 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 |
| Secondary School District | Acalanes Union High School District (09 - 12) |
| Elementary School District | Walnut Creek Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $1,059,042 (+2%) Land $294,829 Building $764,213 | |
| 2025 | $12,507.00 Homeowner's exemption | $1,038,278 Land $289,049 Building $749,229 |
| 2023 | $12,041.00 (+2.23%) Homeowner's exemption | $997,963 Land $277,826 Building $720,137 |
| 2022 | $11,778.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 4430 Walnut Blvd in Zone X, an area of minimal flood risk, though there have been 6 flood claims nearby since 1982.
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 |
| Flood Insurance Cost | Premium on File median of 25 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 25 in force |
| Nearby Flood Claims | 6 (1982–2015) |
| Claims Outside the SFHA | 1 of 6 |
| Most Recent Claim | Feb 2015 · rainfall accumulation |
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 4430 Walnut Blvd is moderate, ranking above 69% 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 | Moderate above 69% of the US · above 44% of California |
|---|---|
| Wildfire Likelihood | 0.3% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 334 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 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Etheric Networks, Sonic Telecom, T-Mobile.
5G (outdoors only) and 4G LTE
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