Los Angeles County property record for 1020 Argonia Pl, Walnut, CA 91789
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 1,986 sqft · built 1984 |
| Lot Size | 0.196 acres (8,551 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $538,000 (Jun 2011) |
| Tax Bill | $9,177 (2025) |
| Flood Zone | Zone D (undetermined) |
| APN | 8735-048-024 |
| Primary APN | 8735-048-024 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Building Area | 1,986 sqft Living Area |
| Year Built | Built 1984 |
|---|---|
| Effective Year Built | Effective 1984 |
| Construction Type | Wood |
| Lot Area | 8,551 sqft (0.196 acres) |
| Lot Dimensions | 110 ft deep x 78 ft wide |
| Cooling System | Central |
|---|---|
| Heating System | Central |
| Street Address | 1020 ARGONIA PL |
|---|---|
| City | WALNUT |
| State | CA |
| Zip | 91789-4321 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | WARPD14800 |
| Legal Description | *TR=39527 LOT 35 |
| Legal Subdivision | 39527 |
| Legal Tract | 39527 |
| Legal Block | 5 |
| Legal Lot Number | 35 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 5 |
| Census Block | 5001 |
| Census Tract | 403408 |
Source: Los Angeles County records · APN 8735-048-024
Assessment roll updated May 21, 2026 · Last verified July 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 | 1020 ARGONIA PL, WALNUT, CA 91789-4321 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jun 01, 2011 · Amount on Record |
| Deed Sale | Jun 01, 2011 · Amount on Record |
| Prior Sale | Jun 01, 2005 · Amount on Record |
| Deed Document Number | 2011754143 |
| Prior Transfer Date | Dec 23, 2002 |
| Prior Transfer Doc | 0000933767 |
| Record Updated | Sep 20, 2026 |
Source: Los Angeles County records · Assessment roll updated May 21, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Municipality | Walnut City |
| Unified School District | Rowland Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $9,177.00 (+7.06%) | $689,258 (+4.04%) Land $351,675 Building $337,583 |
| 2023 | $8,572.00 (+2.14%) | $662,495 Land $338,020 Building $324,475 |
| 2022 | $8,392.00 |
Source: FEMA National Flood Hazard Layer as of September 30, 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026
| FEMA Flood Zone | Zone D undetermined · not studied |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| 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 |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Spectrum Cable | 1,000 / 35 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
May also be available: California Internet.
Based on FCC filings for 365 locations within half a mile of this property.
Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026
| Water System | SUBURBAN WATER SYSTEMS-SAN JOSE private · serves 170,523 people |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Aug 2024 |
| Also Mapped Here | THREE VALLEYS MWD |
| Lead | Under 1 ppb (2023–2025) 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 as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. The full violation and enforcement history is in the system's EPA record.
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