| Primary address | 20573 Gernside Drive, Walnut |
| Zip code | 91789 |
| County | Los Angeles |
| Municipality | Diamond Bar |
View detailed information on past sales, title documents and property taxes, including the assessed market value, in their dedicated tabs.
| Sale date | 01/03/2020 |
| Sale price | $870,000 |
| Arm's length | Register |
| Current property tax | $12,053 |
| Building sqft | 2,304 |
| Building class | Single Family Residence (0100) |
| Acreage | 0.22
|
| Units | 1 |
| Year built | 1975 |
| Year last altered | Register |
| Bedrooms | 4 |
| Bathrooms | 3 |
| Heating/AC | Central refrigeration & heating |
| Zoning district | Low Density Residential (RL) |
| Weed hazard | No |
| School district | Walnut Valley Unified School District |
View more neighborhood information such as transportation, nearby schools and risk designations in the dedicated tab.
Property reports include comprehensive occupancy, improvement and development information (where available).
Create a free account to access valuable data points such as:
20573 Gernside Drive, Walnut, CA 91789 was built in 1975 and has a total of 2,304 square feet.
What is the assessed value of 20573 Gernside Drive, Walnut, CA 91789 and the property tax paid?Assessed at $970,495, the tax amount paid for 20573 Gernside Drive, Walnut, CA 91789 is $11,365.
When was 20573 Gernside Drive, Walnut, CA 91789 last sold and what was the last sale price?20573 Gernside Drive, Walnut, CA 91789 was last sold in 01/03/2020 for $870,000.
View detailed property contacts like owners, building management, representatives from permits and tenants with a free account.
Create a free account to view the complete sales history for 20573 Gernside Drive, Walnut, including title documents, transfer conditions, mortgages and liens.
To view the complete history of deeds, mortgages, assignments of leases and rents, and more, sign up for free. Available data goes back to 1966.
R: Recorded date
D: Document date
Access detailed property tax data for 20573 Gernside Drive, Walnut, CA 91789. Tax information included: property tax, market value and assessed value, exemptions, abatements, and assessment history.
| Tax year: | 2025-2026 |
| Base tax | $11,365 |
| Current property tax | $12,053 |
| Market value | $970,495 |
| Tax per sqft | $5 |
Abatements, financial assistance programs and non-ad valorem taxes levied as special taxes/direct assessments are applicable for this property.
| Code | Description | Tax levied |
|---|---|---|
| 06221 | County Sanitation District #21 | Register |
| 14651 | Diamond Bar District #38 | Register |
| 02824 | Diamond Bar Lighting District | Register |
| 06181 | Greater L.A. County Vector Control District | Register |
| 03694 | La County Regional Park And Open Space District | Register |
Here's the assessment & property tax history for 20573 Gernside Drive, Walnut, including the evolution of the total tax rate and corresponding property tax.
| Year | Assessment value | Total tax rate | Property tax | Year over year change |
|---|---|---|---|---|
| 2025-2026 | $970,495 | 1.1711 | $11,365 | +3.43% |
| 2024-2025 | $951,467 | 1.1549 | $10,988 | +2.57% |
| 2023-2024 | $932,812 | 1.1485 | $10,713 | +2.10% |
| 2022-2023 | $914,522 | 1.1474 | $10,493 | +1.75% |
| 2021-2022 | $896,591 | 1.1502 | $10,313 | +44.81% |
The complete history of permits filed for 20573 Gernside Drive, Walnut, including new construction or demolition permits, complaints, plus any work pertaining to plumbing, heating and sprinkler systems is available with a free account. Available data goes back to 1990.
Access a detailed real estate market overview of Walnut so you can assess current trends, home values, types of properties sold and transaction volume. View the median home sale price in Walnut and compare it to other neighborhoods in Los Angeles County.
Create a free account to unlock extended information for 20573 Gernside Drive, Walnut, including whether it's located in FEMA flood zones, floodways or special flood hazard areas, as well as the Coastal barriers resources system area (COBRA).
| FEMA flood zone(s) | X (See more on map) |
| Fire hazard zone | See more on map |
| Faults and tsunami inundation zone map | Register |
| Landslides and liquefaction map | Register |
Access the detailed traffic volume map for 20573 Gernside Drive, Walnut to see estimated average daily traffic on streets surrounding the property as well as the types of properties in its vicinity.
| View daily traffic map |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Walnut Valley Adult | NR | Public | 0 | 0.29 | |
| International Cross Academy | NR | Private | 1-12 | 0 | 0.33 |
| Walnut Elementary School | 8 | Public | K-5 | 671 | 0.44 |
| Discovery World Montessori | NR | Private | K-4 | 19 | 0.68 |
| Discovery World Montessori School | NR | Private | K-6 | 70 | 0.69 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Walnut Valley Adult | NR | Public | 0 | 0.29 | |
| International Cross Academy | NR | Private | 1-12 | 0 | 0.33 |
| South Pointe Middle School | 8 | Public | 6-8 | 879 | 0.50 |
| Wisdom Kids College | NR | Private | K-8 | 0 | 0.89 |
| Institute Of Knowledge | NR | Private | K-8 | 127 | 1.00 |
| Name | Rating | Type | Grade range | No of students | Distance to school (mi) |
|---|---|---|---|---|---|
| Walnut Valley Adult | NR | Public | 0 | 0.29 | |
| International Cross Academy | NR | Private | 1-12 | 0 | 0.33 |
| Ron Hockwalt Academies (Continuation) School | NR | Public | 9-12 | 41 | 0.86 |
| Institute of Knowledge | NR | Private | K-10 | 265 | 1.04 |
| Elite Open School | NR | Private | 5-12 | 43 | 1.07 |
Data provided by GreatSchools.org © 2025. All rights reserved.
Here are the neighbors for 20573 Gernside Drive, Walnut.
| Address | Square feet | Purchase date | Purchase price |
|---|---|---|---|
| 20511 Gernside Dr, Walnut | 2,304 | 10/21/2016 | |
| 1379 Willow Bud Dr, Walnut | 2,525 | 04/24/2008 | |
| 20503 Gernside Dr, Walnut | 1,609 | 12/24/2002 | $346,003 |
| 20577 Gernside Dr, Walnut | 2,307 | 08/06/2025 | |
| 20559 Gernside Dr, Walnut | 2,304 | 03/05/2018 | |
| 1405 Willow Bud Dr, Walnut | 2,208 | 06/02/2017 | $850,000 |
| 1371 Willow Bud Dr, Walnut | 3,002 | 09/15/2015 | $1,050,000 |
| 1363 Willow Bud Dr, Walnut | 2,796 | 12/14/2020 | |
| 1387 Willow Bud Dr, Walnut | 2,808 | 02/24/2023 | $1,280,000 |
| 20527 Gernside Dr, Walnut | 1,767 | 04/22/2022 | |
| 20535 Gernside Dr, Walnut | 1,609 | 06/26/2001 | |
| 1409 Willow Bud Dr, Walnut | 2,984 | 02/02/2001 | $458,004 |
| 1401 Willow Bud Dr, Walnut | 2,796 | 04/03/2018 | |
| 20551 Gernside Dr, Walnut | 2,294 | 08/23/2019 | |
| 20459 Gernside Dr, Walnut | 1,767 | 05/13/2011 | $486,004 |
| 20565 Gernside Dr, Walnut | 2,307 | 07/30/2019 | |
| 20543 Gernside Dr, Walnut | 1,767 | 03/28/2013 | $575,000 |
| 20519 Gernside Dr, Walnut | 2,307 | 02/27/1998 | $222,000 |
| 1395 Willow Bud Dr, Walnut | 2,984 | ||
| 1355 Willow Bud Dr, Walnut | 2,525 | 08/24/2012 |