Mark Lear
WERE Real Estate Inc
(657) 223-8121
354 Total Sales
1 in Diamond Bar
$862,000 Price
21030 Riego Dr Diamond Bar, CA 91765
Diamond Bar AreaEstimated Value: $1,394,999
5
Beds
3
Baths
2,157
Sq Ft
$647/Sq Ft
Est. Value
Highlights
- Private Pool
- RV Access or Parking
- Main Floor Bedroom
- Castle Rock Elementary School Rated A
- Updated Kitchen
- Great Room with Fireplace
About This Home
As of April 2026This home goes beyond cosmetic updates with a complete infrastructure overhaul *** Electrical - upgraded 200Amp MAIN PANEL & whole-house WIRE REPLACEMENT *** Plumbing - full re-piping with durable Type-L COPPER *** New Insulation throughout the entire house & garage paired with New HVAC Ducting *** Interior defined by quality & safety, featuring ALL NEW FIRE-CODE drywall and ceilings, ALL NEW energy-efficient windows and patio door *** The chef-inspired kitchen showcases European-style cabinets, sleek Quartz countertop, an 18-gauge stainless steel single sink & all New appliances *** the curb appeal is enhanced by fresh paint, new garage door, new seamless gutters and a refurbished roof with new felt paper & reset tiles *** RV Parking available *** The backyard includes mature fruit trees and an established pool ready for its new owner’s personal touch *** easy access to freeway *** few minutes to market and school *** it's NOT a flip house *** Transformed 5-beds, 3-baths, Single-Story home, located in the highly sought-after Walnut School District. *** The residence has been renovated down to the studs, offering the peace of mind of a Brand-New home with the character of an established neighborhood. ***
Last Agent to Sell the Property
Pacific Sterling Realty Brokerage Phone: 626-991-3801 License #01989489 Listed on: 01/26/2026
Create a Home Valuation Report for This Property
The Home Valuation Report is an in-depth analysis detailing your home's value as well as a comparison with similar homes in the area
Home Details
Home Type
- Single Family
Year Built
- Built in 1980
Lot Details
- 8,312 Sq Ft Lot
- Sprinkler System
- Back and Front Yard
- Density is up to 1 Unit/Acre
Parking
- 3 Car Direct Access Garage
- Parking Available
- Front Facing Garage
- Two Garage Doors
- Garage Door Opener
- Driveway
- RV Access or Parking
Home Design
- Entry on the 1st floor
- Fire Rated Drywall
- Copper Plumbing
Interior Spaces
- 2,157 Sq Ft Home
- 1-Story Property
- Recessed Lighting
- Great Room with Fireplace
- Family Room Off Kitchen
- Vinyl Flooring
- Laundry Room
Kitchen
- Updated Kitchen
- Open to Family Room
- Breakfast Bar
- Gas Oven
- Range Hood
- Dishwasher
- Kitchen Island
- Quartz Countertops
Bedrooms and Bathrooms
- 5 Main Level Bedrooms
- Walk-In Closet
- Remodeled Bathroom
- Bathroom on Main Level
- 3 Full Bathrooms
- Quartz Bathroom Countertops
- Bathtub with Shower
- Exhaust Fan In Bathroom
Home Security
- Carbon Monoxide Detectors
- Fire and Smoke Detector
Outdoor Features
- Private Pool
- Rain Gutters
Location
- Suburban Location
Schools
- Castle Rock Elementary School
- Southpoint Middle School
- Diamond Bar High School
Utilities
- Central Heating and Cooling System
- Gas Water Heater
Community Details
- No Home Owners Association
- Laundry Facilities
Listing and Financial Details
- Tax Lot 34
- Tax Tract Number 33104
- Assessor Parcel Number 8765013018
- $705 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
Jan 26, 2026
Closed on
Apr 9, 2026
Sold by
Oskar Chen and Ya-Ling Lin
Bought by
Seller's Agent
Amie Chen
Pacific Sterling Realty
Buyer's Agent
LYNN DU TRAN
IRN REALTY
List Price
$1,428,000
Sold Price
$1,388,000
Premium/Discount to List
-$40,000
-2.8%
Views
53
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
$6,999
Avg. Annual Appreciation
1.20%
Original Mortgage
$888,000
Outstanding Balance
$884,437
Interest Rate
6%
Mortgage Type
New Conventional
Estimated Equity
$510,562
Purchase Details
Closed on
Apr 18, 2024
Sold by
Chin An-Iseh and Chin Lin-Yun L
Bought by
Chen Oskar and Lin Ya-Ling
Home Values in the Area
Average Home Value in this Area
Agents Specializing in Diamond Bar, CA
-
Mark Lear
-
Rudy Kusuma
Rudy Kusuma
LPT Realty, Inc
(916) 249-4078
144 Total Sales
10 in Diamond Bar
$345K - $1.4M Price Range
-
Edward Ong
Edward Ong
Responds QuicklyCorpen Real Estate Group
(669) 200-0582
82 Total Sales
1 in Diamond Bar
$456,000 Price
-
Lisa Madrigal
Lisa Madrigal
Responds QuicklyFiv Realty Co.
(951) 406-6266
48 Total Sales
1 in Diamond Bar
$740,000 Price
-
Gerry Nicks
Gerry Nicks
Responds QuicklyKeller Williams Realty
(424) 370-0766
164 Total Sales
2 in Diamond Bar
$895,000 Price Range
-
ROSEMARIE GROEN
ROSEMARIE GROEN
MAINSTREET REALTORS
(909) 298-8418
12 Total Sales
2 in Diamond Bar
$1,030,000 Price Range
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 |
|---|---|---|---|
| $1,388,000 | First American Title Company | ||
| Chen Oskar | $990,000 | California Best Title |
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 |
|---|---|---|---|
| Open | $888,000 |
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 |
|---|---|---|---|---|
| 04/17/2026 04/17/26 | Sold | $1,388,000 | -2.8% | $643 / Sq Ft |
| 03/12/2026 03/12/26 | Pending | -- | -- | -- |
| 03/03/2026 03/03/26 | Price Changed | $1,428,000 | 0.0% | $662 / Sq Ft |
| 03/03/2026 03/03/26 | For Sale | $1,428,000 | +2.9% | $662 / Sq Ft |
| 03/01/2026 03/01/26 | Off Market | $1,388,000 | -- | -- |
| 02/19/2026 02/19/26 | Price Changed | $1,449,999 | 0.0% | $672 / Sq Ft |
| 01/26/2026 01/26/26 | For Sale | $1,450,000 | -- | $672 / 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 |
|---|---|---|---|---|
| 2026 | $12,703 | $1,029,995 | $720,581 | $309,414 |
| 2025 | $12,703 | $1,009,800 | $706,452 | $303,348 |
| 2024 | $4,454 | $331,101 | $132,433 | $198,668 |
| 2023 | $4,353 | $324,610 | $129,837 | $194,773 |
| 2022 | $4,261 | $318,246 | $127,292 | $190,954 |
| 2021 | $4,175 | $312,007 | $124,797 | $187,210 |
| 2019 | $4,048 | $302,755 | $121,097 | $181,658 |
| 2018 | $3,814 | $296,820 | $118,723 | $178,097 |
| 2016 | $3,529 | $285,296 | $114,114 | $171,182 |
| 2015 | $3,546 | $281,011 | $112,400 | $168,611 |
| 2014 | $3,553 | $275,508 | $110,199 | $165,309 |
Source: Public Records
Agents Affiliated with this Home
-
Amie Chen
Seller's Agent in 2026
Amie Chen
Pacific Sterling Realty
(626) 806-5266
58 Total Sales
-
LYNN DU TRAN
Buyer's Agent in 2026
LYNN DU TRAN
IRN REALTY
(626) 447-5100
35 Total Sales
Map
Source: California Regional Multiple Listing Service (CRMLS)
MLS Number: TR26018437
APN: 8765-013-018
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
Nearby Homes
- 3147 Fallow Field Dr
- 20977 E Canyon Ridge Ln
- 21206 Silver Cloud Dr
- 21056 Blossom Way
- 3199 Marigold Cir
- 20774 Timberline Ln
- 2726 Castle Rock Rd
- 3139 Marigold Cir
- 21078 Willow Heights Dr
- 21325 Hipass Dr
- 2634 S Quarry Ln Unit A
- 20949 Ambushers St
- 20721 E Crest Ln Unit B
- 21504 Cold Spring Ln
- 20783 E Crest Ln
- 20773 E Crest Ln Unit B
- 2903 Yucatan Place Unit A
- 20951 High Country Dr
- 3525 Castle Rock Rd
- 2819 Steeplechase Ln
- 21020 Riego Dr
- 21040 Riego Dr
- 21015 Malad Ct
- 21025 Malad Ct
- 21010 Riego Dr
- 21050 Riego Dr
- 21035 Riego Dr
- 21005 Malad Ct
- 21035 Malad Ct
- 21045 Riego Dr
- 2965 Ohan Ct
- 21055 Riego Dr
- 2955 Ohan Ct
- 21000 Malad Ct
- 2950 Ohan Ct
- 2955 Fallow Field Dr
- 21010 Malad Ct
- 3105 Fallow Field Dr
- 2940 Ohan Ct
- 3100 Fallow Field Dr
Your Personal Tour Guide
Ask me questions while you tour the home.