21002 Cornerstone Dr, Walnut, CA 91789
SOLD
APR 2, 2026
Listed by Oliver Wei, HomeSmart, Evergreen Realty, (626) 239-1700 . Bought with A + Realty & Mortgage

21002 Cornerstone Dr
Walnut, CA 91789

  • 4 Beds
  • 3 Baths
  • 1,800 sqft

$971,000

Last Sold: Apr 2, 2026
1% over list $959K
$539/sqft
Est. Refi. Payment $5,945/mo*
Refinance Your Home

$971,000

Last Sold: Apr 2, 2026
1% over list $959K
$539/sqft
Est. Refi. Payment $5,945/mo*
Refinance Your Home
4 Beds
3 Baths
1,800 sqft

Home Value

Trulia Estimate
$967K
Since last month
Decreased$5K (-0.5%)
Since last year
Decreased$13K (-1.3%)
Since last sale
Decreased$4K (-0.4%)
Learn more about this home's value by checking out its Trulia Estimate, the value of nearby homes, and how much similar homes have sold for.

Trulia Estimate

The of this home's value increased by +51% in the last 10 years
MonthEstimated value
2026
August 2026$967K
July 2026$971K
June 2026$977K
May 2026$974K
March 2026$976K
February 2026$974K
January 2026$949K
2025
2024
2023
2022
2021
2020
2019
2018
2017
2016

Comparable sales

These are recently sold homes that have a similar location or other similar features to this home, like bedrooms, bathrooms, and square footage. Get a sense of the expected prices in the area by viewing these homes.
Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
20982 Cornerstone Dr, Walnut, CA
0.03
Condo
$1,015,000
08/13/26
4
3
1,830
20916 Jade Dr, Walnut, CA
0.11
Condo
$915,000
09/04/25
4
3.5
1,760
810 Silver Fir Rd, Diamond Bar, CA
0.84
Condo
$495,000
09/02/25
2
1
878
720 Windwood Dr, Diamond Bar, CA
0.82
Condo
$485,555
06/26/26
2
1
882
607 Alder Ln, Diamond Bar, CA
0.77
Condo
$400,000
08/26/25
2
3
1,368
838 Windwood Dr, Diamond Bar, CA
0.96
Condo
$499,999
11/07/25
2
1
878

Nearby home prices

Get a sense of expected prices in the area by checking the value of nearby homes.
Address
Distance
Price
Bed
Bath
Sqft
Status
20982 Cornerstone Dr, Walnut, CA 91789
0.03
$1,015,000
4
3
1,830
Recently Sold
20980 Cornerstone Dr, Walnut, CA 91789
0.03
$936,800
3
3.5
1,760
Off Market
20968 Cornerstone Dr, Walnut, CA 91789
0.03
$939,500
3
3.5
1,880
Off Market
20956 Cornerstone Dr, Walnut, CA 91789
0.05
-
3
3.5
1,760
Off Market
151 Redstone Dr, Walnut, CA 91789
0.05
$1,431,500
4
3
2,364
Off Market
155 Blue Crystal Dr, Walnut, CA 91789
0.04
$1,312,800
4
3
2,072
Off Market
130 Greenleaf Dr, Walnut, CA 91789
0.08
$1,063,100
4
3.5
1,931
Off Market
150 Greenleaf Dr, Walnut, CA 91789
0.07
$1,290,700
5
4
2,364
Off Market
159 Redstone Dr, Walnut, CA 91789
0.07
$1,377,300
4
3
2,316
Off Market
159 Sterling Dr, Walnut, CA 91789
0.06
$1,396,500
4
3
2,183
Off Market
20916 Jade Dr, Walnut, CA 91789
0.11
$909,100
4
3.5
1,760
Off Market

Local Information

  • Map ViewExplore the area around 21002 Cornerstone Dr.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Property Type
Condo
Year Built
2018
Living Area
1,800 sqft
Price/Sqft
$539/sqft
Parking
2 Car Garage
HOA
$306/Monthly

About this House

21002 Cornerstone Dr is a spacious 4 bedroom 3 bath home with approximately 1,800 square feet in the desirable Cornerstone community built in 2018. The open floor plan and natural light create a welcoming living space. The Cornerstone HOA provides community amenities that include a playground, picnic and barbecue areas maintaining common grounds and outdoor areas. Located in the award winning Walnut Valley Unified School District and within walking distance to Vejar Elementary School, Suzanne Middle School, and Walnut High School. Nearby supermarkets and shopping include options along Lemon Ave and the Walnut Shopping Center area for everyday convenience. Close to freeways for easy commuting.
21002 Cornerstone Dr, Walnut, CA 91789 is a 4 bedroom, 3 bathroom, 1,800 sqft condo built in 2018. It last sold for $971,000 on Apr 2, 2026 (1% above the $959,000 asking price). More recently, it was listed as a rental in December 2025 with an asking price of $3,980 per month. That rental listing was removed on February 1, 2026. It is currently off market. The Trulia Estimate is $966,800, with a rent estimate of $3,923/month.

Home Details for 21002 Cornerstone Dr

Interior Features

Interior Details
Number of Rooms: 1Types of Rooms: Other
Beds & Baths
Number of Bedrooms: 4Main Level Bedrooms: 1Number of Bathrooms: 3Number of Bathrooms (full): 3Number of Bathrooms (main level): 1
Dimensions and Layout
Living Area: 1800 Square Feet
Appliances & Utilities
Laundry: Laundry Room
Heating & Cooling
Heating: CentralHas CoolingAir Conditioning: Central AirHas HeatingHeating Fuel: Central
Fireplace & Spa
Fireplace: NoneNo Fireplace
Windows, Doors, Floors & Walls
Common Walls: 2+ Common Walls
Levels, Entrance, & Accessibility
Stories: 3Number of Stories: 3Levels: Three Or MoreEntry Location: 1
View
Has a ViewView: City Lights

Exterior Features

Exterior Home Features
No Private Pool
Parking & Garage
Number of Garage Spaces: 2Number of Covered Spaces: 2Has a GarageHas an Attached GarageParking Spaces: 2Parking: Garage Attached
Pool
Pool: None
Frontage
Not on Waterfront
Water & Sewer
Sewer: Public Sewer
Surface & Elevation
Elevation Units: Feet

Days on Market

Cumulative Days on Market: 5

Property Information

Year Built
Year Built: 2018
Property Type / Style
Property Type: ResidentialProperty Subtype: CondominiumStructure Type: HouseArchitecture: House
Building
Not a New ConstructionAttached To Another StructureNo Additional Parcels
Property Information
Parcel Number: 8720047083

Price & Status

Price
List Price: $959,000Price Per Sqft: $539/sqft
Status Change & Dates
Off Market Date: Mon Mar 02 2026

Active Status

MLS Status: Closed

Location

Direction & Address
City: Walnut
School Information
High School District: Walnut Valley Unified

Community

Community Features: ParkNot Senior CommunityUnits in Building: 143

HOA

HOA Name: T Cornerstone Homeowners AssociationHOA Phone: 714-285-2626Association for this Listing: California Regional MLSHas an HOAHOA Fee: $306/Monthly

Lot Information

Lot Area: 0.40 acres

Listing Info

Special Conditions: Standard

Offer

Listing Terms: Cash, Conventional, Submit

Miscellaneous

Mls Number: CV26038033Living Area Range Units: Square FeetAttribution Contact: 909-377-6789Activation Date: Wed Feb 25 2026Common Interest: CondominiumStart Showing Date: Wed Feb 25 2026Universal Property Id: US-06037-N-8720047083-R-N

Additional Information

HOA Amenities: Management,BarbecueSource Internet Entire Listing Display

Price and Tax history

DateEventPrice
Apr 2, 2026
Source: CRMLS #CV26038033
Sold
$971,000
Mar 25, 2026
Source: CRMLS #CV26038033
Pending
$959,000
Mar 3, 2026
Source: CRMLS #CV26038033
Contingent
$959,000
Feb 25, 2026
Source: CRMLS #CV26038033
Listed For Sale
$959,000
Feb 1, 2026
Source: CRMLS #AR25272178
ListingRemoved
$3,980

Market trends in Walnut

Last updated July 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
79
4MoM

Around this home

What Locals Say about Walnut

At least 124 Trulia users voted on each feature.

  • 88 % Say there are sidewalks

  • 88 % Say parking is easy

  • 81 % Say car is needed

  • 81 % Say yards are well-kept

  • 80 % Say it's dog friendly

  • 75 % Say it's quiet

  • 72 % Say streets are well-lit

  • 68 % Say people would walk alone at night

  • 63 % Say it's walkable to grocery stores

  • 63 % Say there's holiday spirit

  • 62 % Say there's wildlife

  • 62 % Say they plan to stay for at least 5 years

  • 47 % Say neighbors are friendly

  • 44 % Say it's walkable to restaurants

  • 44 % Say kids play outside

  • 30 % Say there are community events

Sourced by Trulia users. Learn more about our methodology.
  • Nicholas R.
    "Very quiet neighborhood, not too much traffic, friendly neighbors. very nice and clean parks, that are close by. "
    4
    Flag
  • Angie.duran323
    "There’re lots of trails and long sidewalks in neighborhoods you can walk your dogs along. Sometimes all the dogs start barking at random times of day which is the only annoyance but other than that it’s great!"
    3
    Flag
  • T
    "City Walnut is known to have one the the best hiking trail in Southern California for adults, kids and pets"
    5
    Flag
  • Ronald G.
    "Public transportation is not very good. Especially for seniors living in the city. Stores are not really in walking distance and if you carry items, you will need to stop several times before getting home."
    1
    Flag
  • Ronald G.
    "The neighborhood is nice and people a generally nice. Easy to get around to stores and small shopping in the areas. If you want real shopping you have to leave the city."
    3
    Flag
  • sme2101
    "There are many families in our neighborhood, we have great parks, everyone is friendly and it’s a safe town"
    1
    Flag
  • Leslie a.
    "I lived here for about 6 years and I really enjoy the nature feel, the birds singing and the trails to walk on."
    2
    Flag
  • Fermin L.
    "I have lived here for the past 7 years and is a safe quiet neighborhood, great parks and city wide activities for children and adults, lots of trails to walk."
    1
    Flag
  • Needeposit
    "Living in the area for the last 20 years and in the same home for 12 years. Very safe area and one of the best school systems."
    1
    Flag
  • Ray
    "Great walking trails, very good schools and parks."
    1
    Flag

LGBTQ Local Legal Protections

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. as of 2026-08-19 16:56:02 PDT 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

Frequently asked questions about 21002 Cornerstone Dr

  • What is 21002 Cornerstone Dr estimated to be worth?
    Trulia's estimated value for 21002 Cornerstone Dr in Walnut, CA is $966,800.
  • What is the price history for 21002 Cornerstone Dr?
    21002 Cornerstone Dr in Walnut, CA last sold for $971,000 in April 2026.
  • Is Walnut a buyer's or seller's market?
    Walnut is currently a seller's market, based on recent for-sale activity.
  • What do residents say about Walnut?
    Residents describe Walnut, CA as pedestrian-friendly, easy to park in, and well-kept. See recently sold homes in Walnut, CA.
  • Does 21002 Cornerstone Dr have air conditioning?
    Yes, 21002 Cornerstone Dr in Walnut, CA has air conditioning.
  • Does 21002 Cornerstone Dr have laundry facilities?
    Yes, 21002 Cornerstone Dr in Walnut, CA has laundry facilities.

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