Los Angeles County property record for 20992 Cornerstone Dr, Walnut, CA 91789
| Property Type | Condominium |
|---|---|
| Details | 4 bd · 3 ba · 1,830 sqft · built 2018 |
| Owner | 2 Company Names on Record |
| Tax Bill | $10,181 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 8720-047-076 |
| Primary APN | 8720-047-076 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Building Area | 1,830 sqft Living Area |
| Year Built | Built 2018 |
|---|---|
| Effective Year Built | Effective 2018 |
| Architectural Style | Condo/Apartment |
| Construction Type | Wood |
| Cooling System | HVAC |
|---|---|
| Heating System | Central |
| Old Parcel Number | 8720047075 |
|---|---|
| Street Address | 20992 CORNERSTONE DR |
| City | WALNUT |
| State | CA |
| Zip | 91789-2567 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Local Zoning Code | WAC3* |
| Legal Description | TR=73294 LOT 42 PH 4 CONDO UNIT 35 (AIRSPACE AND 1/9 INT IN COMMON AREA) |
| Legal Tract | 73294 |
| Legal Block | 2 |
| Legal Lot Number | 42 |
| Jurisdiction | LOS ANGELES CA |
| Township / Civil Division | EAST SAN GABRIEL VALLEY |
| Census Block Group | 2 |
| Census Block | 2011 |
| Census Tract | 403402 |
Source: Los Angeles County records, as of May 21, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Company Names on Record |
|---|---|
| Mailing Address | 23317 RIDGE LINE RD, DIAMOND BAR, CA 91765-3004 |
| Owner Type | Company |
| Vesting | Borrower in Default |
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
Source: Los Angeles County assessment roll, as of May 21, 2026
| Type | Name |
|---|---|
| State | California |
| County | Los Angeles County |
| Municipality | Walnut City |
| Unified School District | Walnut Valley Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2025 | $10,181.00 (+5.08%) | $816,957 (+4.04%) Land $486,761 Building $330,196 |
| 2024 | $9,689.00 (+2.53%) | |
| 2023 | $9,450.00 (+2.13%) | $785,235 Land $467,860 Building $317,375 |
| 2022 | $9,253.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
Source: FEMA National Flood Hazard Layer, effective September 30, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; 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 |
|---|
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 | WALNUT VALLEY WATER DISTRICT serves 100,941 people · EPA ID CA1910234 |
|---|---|
| Water Source | Purchased surface water from several systems |
| Last State Inspection | Jun 2023 |
| 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.
Source: FCC Broadband Data Collection, based on 549 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Frontier Fiber | 7,000 / 7,000 |
| Spectrum Cable · Fiber in parts of the area | 1,000 / 1,000 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless | 100 / 20 |
May also be available: GeoLinks.
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