Los Angeles County property record for 21020 Cornerstone Dr, Walnut, CA 91789 · Last verified July 2026
| Property Type | Residential > Condominium / Townhouse > Condominium |
|---|---|
| Bedrooms | 4 Beds |
| Bathrooms | 3 Baths |
| Architecture Style | Condo/Apartment |
| Year Built | Built 2018 |
| Square Footage | 1,750 sqft Living Area |
| Occupancy | Owner Occupied |
| Last Sale | $709,500 (2017) |
| Tax Bill | $10,150.00 (2025) |
| Primary APN | 8720-047-086 |
|---|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Building Area | 1,750 sqft Living Area |
| Year Built | Built 2018 |
|---|---|
| Effective Year Built | Effective 2018 |
| Architectural Style | Condo/Apartment Style |
| Construction Type | Wood Construction |
| Cooling System | HVAC Cooling |
|---|---|
| Heating System | Central Heating |
| Street Address | 21020 CORNERSTONE DR |
|---|---|
| City | WALNUT |
| State | CA |
| Zip | 91789-2571 |
| Property Usage | Residential Property Usage |
| Type | Residential > Condominium / Townhouse > Condominium |
| Legal Description | TR=73294 LOT 43 PH 2 CONDO UNIT 45 (AIRSPACE AND 1/9 INT IN COMMON AREA) |
| Legal Subdivision | GALLERY AT CORNERSTONE |
| Legal Tract | 73294 |
| Legal Block | 2 |
| Legal Lot Number | 43 |
| Jurisdiction | LOS ANGELES CA |
| Minor Civil Division | EAST SAN GABRIEL VALLEY |
| Census Blockgroup | 2 |
| Census Block | 2011 |
| Census Tract | 403402 |
Source: Los Angeles County records · APN 8720-047-086
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 | 21020 CORNERSTONE DR, WALNUT, CA 91789-2571 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jun 20, 2017 · Amount on Record |
| Deed Sale | Jun 20, 2017 · Amount on Record |
| Deed Doc Number | 2017681664 |
| Record Refreshed | 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 | Walnut Valley 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 | $10,150.00 (+7.75%) Homeowner's exemption | $823,430 (+4.04%) Land $290,145 Building $533,285 |
| 2023 | $9,420.00 (+2.15%) Homeowner's exemption | $791,457 Land $278,879 Building $512,578 |
| 2022 | $9,222.00 |
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