Seller's Agent in 2025
Yepeng Yang
RE/MAX
(909) 708-6699
44 Total Sales
21062 Quail Run Dr Walnut, CA 91789
Estimated Value: $1,567,000 - $1,700,000
4
Beds
3.5
Baths
2,882
Sq Ft
$573/Sq Ft
Est. Value
Highlights
- Private Pool
- Panoramic View
- 2 Car Attached Garage
- Castle Rock Elementary School Rated A
- Double Oven
- Walk-In Closet
About This Home
As of November 2025Stunning View Home in Prestigious Diamond Bar with Solar, Pool & Dual Master Suites!
Experience breathtaking panoramic views from this custom 4-bedroom, 4-bathroom estate perched atop a serene cul-de-sac in the hills of Diamond Bar. Located near Ronald Reagan Park and within the award-winning Walnut Valley School District, this beautifully upgraded two-story home offers nearly 2,900 square feet of refined living space.
Step through elegant double doors into a grand entry showcasing a custom wrought-iron staircase, warm mahogany and laminate flooring, and soaring ceilings. The remodeled kitchen is a chef’s dream, featuring granite countertops, a large center island, and a built-in refrigerator/freezer. Adjacent is the expansive family room with a cozy fireplace and custom media niche—perfect for entertaining.
All four spacious bedrooms are upstairs, including two luxurious master suites, each with spa-like bathrooms. Enjoy seamless indoor-outdoor living in the entertainer’s backyard featuring a saltwater pool and spa with waterfall, built-in BBQ, fireplace and fire pit, covered patio with retractable awnings, and built-in surround sound system—all set against a dramatic backdrop of city lights and snow-capped mountains. Additional highlights include: Fully paid-off solar system Attached 2-car garage Central air & heat Quick access to 57 & 60 freeways
Last Agent to Sell the Property
RE/MAX Galaxy Brokerage Phone: 909-708-6699 License #01879945 Listed on: 04/18/2025
Home Details
Home Type
- Single Family
Year Built
- Built in 1986
Lot Details
- 6,562 Sq Ft Lot
- Landscaped
- Sprinklers on Timer
- Back and Front Yard
- Property is zoned LCRPD100006U*
HOA Fees
- $25 Monthly HOA Fees
Parking
- 2 Car Attached Garage
Property Views
- Panoramic
- City Lights
- Mountain
- Hills
Home Design
- Entry on the 1st floor
- Tile Roof
Interior Spaces
- 2,882 Sq Ft Home
- 2-Story Property
- Family Room
- Living Room with Fireplace
- Laundry Room
Kitchen
- Double Oven
- Electric Cooktop
- Range Hood
- Dishwasher
- Disposal
Bedrooms and Bathrooms
- 4 Bedrooms
- All Upper Level Bedrooms
- Walk-In Closet
Pool
- Private Pool
- Spa
Outdoor Features
- Patio
- Exterior Lighting
Schools
- Castle Rock Elementary School
- South Point Middle School
- Diamond Bar High School
Utilities
- Central Heating and Cooling System
- Gas Water Heater
Community Details
- Regent Association Services Association, Phone Number (714) 634-0611
Listing and Financial Details
- Tax Lot 33
- Tax Tract Number 43162
- Assessor Parcel Number 8765017016
- $1,299 per year additional tax assessments
Ownership History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
Date
Name
Owned For
Owner Type
Purchase Details
Listed on
Apr 18, 2025
Closed on
Nov 6, 2025
Sold by
Bought by
Seller's Agent
Yepeng Yang
RE/MAX Galaxy
Buyer's Agent
Peter Loh
RE/MAX Galaxy
List Price
$1,799,000
Sold Price
$1,580,000
Premium/Discount to List
-$219,000
-12.17%
Views
181
Current Estimated Value
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Estimated Appreciation
$70,949
Avg. Annual Appreciation
7.47%
Purchase Details
Closed on
Apr 25, 2023
Sold by
Bought by
Purchase Details
Listed on
Nov 24, 2018
Closed on
Mar 15, 2019
Sold by
Bought by
Seller's Agent
Cathy Cheng
CC Royal Realty
Buyer's Agent
Della Sun
RE Lending & Investment
List Price
$1,350,000
Sold Price
$1,150,000
Premium/Discount to List
-$200,000
-14.81%
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
5.15%
Original Mortgage
$747,000
Interest Rate
4.5%
Mortgage Type
Adjustable Rate Mortgage/ARM
Purchase Details
Closed on
Apr 5, 2018
Sold by
Bought by
Purchase Details
Listed on
Aug 8, 2013
Closed on
Aug 21, 2013
Sold by
Bought by
Seller's Agent
BRIAN KANG
CENTURY 21 MASTERS
Buyer's Agent
Cathy Cheng
CC Royal Realty
List Price
$1,290,000
Sold Price
$1,352,000
Premium/Discount to List
$62,000
4.81%
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
1.58%
Original Mortgage
$749,000
Interest Rate
3.12%
Mortgage Type
Adjustable Rate Mortgage/ARM
Purchase Details
Closed on
Apr 28, 2003
Sold by
Bought by
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$275,000
Interest Rate
5.72%
Purchase Details
Closed on
Apr 26, 2001
Sold by
Bought by
Purchase Details
Closed on
Feb 15, 2001
Sold by
Bought by
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$275,000
Interest Rate
6.98%
Purchase Details
Closed on
Aug 31, 1995
Sold by
Bought by
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$57,000
Interest Rate
7.83%
Purchase Details
Closed on
May 4, 1994
Sold by
Bought by
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$85,000
Interest Rate
7.84%
Purchase Details
Closed on
Apr 19, 1994
Sold by
Bought by
Home Financials for this Owner
Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$85,000
Interest Rate
7.84%
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Home Values in the Area
Average Home Value in this Area
Purchase History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Buyer | Sale Price | Title Company |
|---|---|---|---|
| $1,580,000 | Wfg National Title | ||
| $1,600,000 | Lawyers Title | ||
| $1,150,000 | Stewart Title Of Ca Inc | ||
| -- | None Available | ||
| $1,352,000 | Chicago Title Company | ||
| -- | Fidelity National Title | ||
| -- | Fidelity National Title | ||
| -- | -- | ||
| -- | Southland Title Corporation | ||
| -- | Old Republic Title | ||
| -- | Old Republic Title Company | ||
| $235,000 | Old Republic Title Company |
Source: Public Records
Mortgage History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Status | Borrower | Loan Amount |
|---|---|---|---|
| Previous Owner | $747,000 | ||
| Previous Owner | $749,000 | ||
| Previous Owner | $275,000 | ||
| Previous Owner | $275,000 | ||
| Previous Owner | $57,000 | ||
| Previous Owner | $85,000 |
Source: Public Records
Property History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Date | Event | Price | List to Sale | Price per Sq Ft | Prior Sale |
|---|---|---|---|---|---|
| 11/17/2025 11/17/25 | Sold | $1,580,000 | -7.1% | $548 / Sq Ft | |
| 09/22/2025 09/22/25 | Pending | -- | -- | -- | |
| 06/12/2025 06/12/25 | Price Changed | $1,699,900 | -5.5% | $590 / Sq Ft | |
| 04/18/2025 04/18/25 | For Sale | $1,799,000 | 0.0% | $624 / Sq Ft | |
| 08/21/2023 08/21/23 | Rented | $5,500 | 0.0% | -- | |
| 07/11/2022 07/11/22 | Off Market | $5,500 | -- | -- | |
| 07/07/2022 07/07/22 | For Rent | $5,500 | 0.0% | -- | |
| 07/06/2022 07/06/22 | Off Market | $5,500 | -- | -- | |
| 06/28/2022 06/28/22 | For Rent | $5,500 | 0.0% | -- | |
| 03/19/2021 03/19/21 | Sold | $1,246,000 | -3.3% | $432 / Sq Ft | View Prior Sale |
| 01/22/2021 01/22/21 | Pending | -- | -- | -- | |
| 01/17/2021 01/17/21 | For Sale | $1,288,000 | +12.0% | $447 / Sq Ft | |
| 04/19/2019 04/19/19 | Sold | $1,150,000 | -3.3% | $399 / Sq Ft | View Prior Sale |
| 03/06/2019 03/06/19 | Pending | -- | -- | -- | |
| 12/30/2018 12/30/18 | Price Changed | $1,188,888 | -11.9% | $413 / Sq Ft | |
| 11/24/2018 11/24/18 | For Sale | $1,350,000 | -0.1% | $468 / Sq Ft | |
| 10/08/2013 10/08/13 | Sold | $1,352,000 | +4.8% | $469 / Sq Ft | View Prior Sale |
| 08/20/2013 08/20/13 | Pending | -- | -- | -- | |
| 08/08/2013 08/08/13 | For Sale | $1,290,000 | -- | $448 / Sq Ft |
Source: California Regional Multiple Listing Service (CRMLS)
Tax History
We collect this data history from publicly available records. To have your information removed, we recommend requesting removal directly through your county’s website.
| Year | Tax Paid | Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. | Land | Improvement |
|---|---|---|---|---|
| 2025 | $21,220 | $1,664,639 | $708,720 | $955,919 |
| 2024 | $20,270 | $1,632,000 | $694,824 | $937,176 |
| 2023 | $16,107 | $1,296,338 | $616,541 | $679,797 |
| 2022 | $15,768 | $1,270,920 | $604,452 | $666,468 |
| 2021 | $14,853 | $1,185,152 | $510,955 | $674,197 |
| 2020 | $14,365 | $1,173,000 | $505,716 | $667,284 |
| 2019 | $17,941 | $1,485,732 | $549,457 | $936,275 |
| 2018 | $17,317 | $1,456,601 | $538,684 | $917,917 |
| 2016 | $16,056 | $1,400,041 | $517,767 | $882,274 |
| 2015 | $16,160 | $1,379,012 | $509,990 | $869,022 |
| 2014 | $16,165 | $1,352,000 | $500,000 | $852,000 |
Source: Public Records
Agents Affiliated with this Home
-
Yepeng Yang
-
Peter Loh
Buyer's Agent in 2025
Peter Loh
RE/MAX
(909) 263-3054
23 Total Sales
-
Qingde(Jacky) Liu
Seller's Agent in 2023
Qingde(Jacky) Liu
Pinnacle Real Estate Group
(909) 529-8888
81 Total Sales
-
MALVIN ROMPAS
M
Buyer's Agent in 2023
MALVIN ROMPAS
Malvin Rompas, Broker
(626) 382-1688
18 Total Sales
-
Tony Chen
Seller's Agent in 2021
Tony Chen
Pinnacle Real Estate Group
(909) 979-7666
48 Total Sales
-
Cathy Cheng
Seller's Agent in 2019
Cathy Cheng
CC Royal Realty
(626) 222-3050
199 Total Sales
Map
Source: California Regional Multiple Listing Service (CRMLS)
MLS Number: TR25086206
APN: 8765-017-016
Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.
The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional.
Based on information from California Regional Multiple Listing Service, Inc. and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information
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