Contra Costa County property record for 1621 3rd Ave, Walnut Creek, CA 94597
| Property Type | Care Home (Retirement, Nursing, Convalescent) |
|---|---|
| Details | 7,144 sqft · built 1949 |
| Lot Size | 0.31 acres (13,503 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $2,500,000 (Oct 2008) |
| Tax Bill | $51,890 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 171-220-063-1 |
| Primary APN | 171-220-063-1 |
|---|---|
| Alternative APN |
|
| Total Rooms | 23 Rooms |
|---|---|
| Stories | 1 Story |
| Building Area | 7,144 sqft Gross Area |
| 1st Floor Area | 7,144 sqft |
| Year Built | Built 1949 |
|---|---|
| Effective Year Built | Effective 1966 |
| Lot Area | 13,503 sqft (0.31 acres) |
| Street Address | 1621 3RD AVE |
|---|---|
| City | WALNUT CREEK |
| State | CA |
| Zip | 94597-2606 |
| Property Category | Commercial |
| Property Type | Commercial > Retail > Care Home (Retirement, Nursing, Convalescent) |
| Local Zoning Code | R-8 |
| Legal Description | PCL MAP 125 PG 15 PCL A |
| Legal Tract | 125PM15 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4003 |
| Census Tract | 340001 |
Source: Contra Costa County assessment roll, 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 Individual Names on File |
|---|---|
| Mailing Address | 1621 3RD AVE, WALNUT CREEK, CA 94597-2606 |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Oct 31, 2008 · Amount on Record |
| Deed Sale | Oct 31, 2008 · Amount on Record |
| Prior Sale | Oct 30, 2003 · Amount on Record |
| Deed Document Number | 2008240116 |
| 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 | $3,231,900 (+7.56%) Land $1,056,300 Building $2,175,600 | |
| 2025 | $51,890.00 (+1.11%) | $3,004,767 (+2.32%) Land $981,700 Building $2,023,067 |
| 2023 | $51,320.00 (+4.92%) | $2,936,772 Land $961,900 Building $1,974,872 |
| 2022 | $48,915.00 |
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 (1982–1986) |
| Most Recent Claim | Feb 1986 · Severe Storms & 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 | Not rated no burnable land within 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 520 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL · Fixed Wireless in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Radiate Holdings Cable · Fiber in parts of the area | 1,500 / 50 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: Sonic Telecom.
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