Contra Costa County property record for 1864 3rd Ave, Walnut Creek, CA 94597
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,961 sqft · built 1973 |
| Lot Size | 0.37 acres (16,117 sqft) |
| Owner | Company Name on File |
| Tax Bill | $2,371 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 171-170-072-2 |
| Primary APN | 171-170-072-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 1,961 sqft Living Area |
| 1st Floor Area | 1,401 sqft |
| 2nd Floor Area | 560 sqft |
| Year Built | Built 1973 |
|---|---|
| Effective Year Built | Effective 1975 |
| Lot Area | 16,117 sqft (0.37 acres) |
| Garage Type | Attached |
| Garage Area | 465 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 1864 3RD AVE |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94597-2545 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | PARCEL MAP 29 PG 16 PCL C & POR PCL B |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3009 |
| Census Tract | 340001 |
Source: Contra Costa County assessment roll, as of July 14, 2026
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| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 1864 3RD AVE, WALNUT CREEK, CA 94597-2545 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Transfer Date | Sep 29, 2004 |
| Transfer Doc | 0000398119 |
| 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 | $144,402 (+2%) Land $31,556 Building $112,846 | |
| 2025 | $2,371.00 (+5.05%) Homeowner's exemption | $141,572 (+4.04%) Land $30,938 Building $110,634 |
| 2023 | $2,257.00 (+0.94%) Homeowner's exemption | $136,077 Land $29,738 Building $106,339 |
| 2022 | $2,236.00 |
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 |
| 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 · Severe Winter Storms And Flooding |
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 99.8% of the US · lower than 99.8% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
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 490 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Sonic Telecom Fiber | 10,000 / 10,000 |
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 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 |
May also be available: T-Mobile USA.
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