21010 Cornerstone Dr, Walnut, CA 91789
Property image
Property image
SOLD
MAR 27, 2026

$925,600

Trulia Estimate
  • 4 Beds
  • 3 Baths
  • 1,830 sqft

21010 Cornerstone Dr, Walnut, CA 91789

Est. Refi. Payment $6,067/mo*
Refinance Your Home
Currently Off Market - Sold Mar 27, 2026 for $677,000

Home Value

Trulia Estimate
$926K
Since last month
Decreased$12K (-1.3%)
Since last year
Decreased$60K (-6.1%)
Since last sale
Increased$249K (+36.7%)
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 +75% in the last 10 years
MonthEstimated value
2026
October 2026$926K
September 2026$954K
August 2026$938K
July 2026$969K
June 2026$990K
May 2026$982K
April 2026$993K
March 2026$1.01M
February 2026$1.01M
January 2026$979K
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
21002 Cornerstone Dr, Walnut, CA
0.00
Condo
$971,000
04/02/26
4
3
1,800
20956 Cornerstone Dr, Walnut, CA
0.05
Condo
$888,000
10/16/25
4
3
1,760
20982 Cornerstone Dr, Walnut, CA
0.03
Condo
$1,015,000
08/13/26
4
3
1,830
720 Windwood Dr, Diamond Bar, CA
0.82
Condo
$485,555
06/26/26
2
1
882
838 Windwood Dr, Diamond Bar, CA
0.96
Condo
$499,999
11/07/25
2
1
878
1131 Loxley Pl, Diamond Bar, CA
1.39
Condo
$800,000
03/13/26
3
2.5
1,518
883 Terrace Ln W #1, Diamond Bar, CA
1.84
Condo
$1,025,000
01/09/26
3
3
1,809
22013 Florence Cir, Walnut, CA
1.34
Condo
$1,365,857
01/30/26
4
3
1,927
265 Vomero Ct, Walnut, CA
1.34
Condo
$1,460,000
03/24/26
4
3
1,927

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
20986 Cornerstone Dr, Walnut, CA 91789
0.00
$962,500
4
3
1,780
Off Market
21000 Cornerstone Dr, Walnut, CA 91789
0.00
$919,800
4
3.5
1,830
Off Market
21008 Cornerstone Dr, Walnut, CA 91789
0.00
$917,000
4
4
1,750
Off Market
20990 Cornerstone Dr, Walnut, CA 91789
0.00
$927,800
4
3
1,750
Off Market
21006 Cornerstone Dr, Walnut, CA 91789
0.00
$1,038,300
3
4
1,760
Off Market
20988 Cornerstone Dr, Walnut, CA 91789
0.00
$858,400
3
4
1,760
Off Market
20992 Cornerstone Dr, Walnut, CA 91789
0.00
$950,400
4
3
1,830
Off Market
21008 Cornerstone Dr, Walnut, CA 91789
0.00
-
Studio
-
-
Off Market
21002 Cornerstone Dr, Walnut, CA 91789
0.00
$971,000
4
3
1,800
Recently Sold
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
$936,500
3
3.5
1,760
Off Market
20968 Cornerstone Dr, Walnut, CA 91789
0.03
$926,500
3
3.5
1,880
Off Market
21030 Cornerstone Dr, Walnut, CA 91789
0.03
$912,900
4
3
1,830
Off Market
21038 Cornerstone Dr, Walnut, CA 91789
0.03
$971,100
4
4
1,830
Off Market
21018 Cornerstone Dr, Walnut, CA 91789
0.03
$873,000
3
4
1,760
Off Market
21032 Cornerstone Dr, Walnut, CA 91789
0.03
$948,800
4
3
1,750
Off Market
21036 Cornerstone Dr, Walnut, CA 91789
0.03
$949,600
4
3
1,760
Off Market
21022 Cornerstone Dr, Walnut, CA 91789
0.03
$949,200
4
4
1,983
Off Market
21012 Cornerstone Dr, Walnut, CA 91789
0.03
$899,000
4
3
1,820
Off Market
21020 Cornerstone Dr, Walnut, CA 91789
0.03
$988,100
4
3.5
1,873
Off Market

Local Information

  • Map ViewExplore the area around 21010 Cornerstone Dr.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Condo
Built in 2018
1,830 sqft
$370/sqft
Garage

About this House

What's unique:Attached garageOpen floor planOpen concept
Award winning walnut school district, built by Shea Home in 2018, located in Walnut's highly desirable Cornerstone Community. This full highly upgraded home is ready for you !This sought-after Tri level floor Plan Maximizes Every Inches Of Its square footage, with 3 bedrooms and 3 full & 1/2 baths, including first-floor bedroom & full bath . Very open floor plan. The open concept main level features and open & airy, fully upgraded kitchen with white cabinetry, custom tile backsplash, Quartz & Granite Counter oversized Island, Stainless steel appliances. Beautiful Flooring, Upgraded wood floor, recessed lighting . Two cars side by side attached garage. Within walking distance to middle and high schools. Closed to restaurants, shops and freeway.
21010 Cornerstone Dr, Walnut, CA 91789 is a 4 bedroom, 3 bathroom, 1,830 sqft condo built in 2018. It last sold for $677,000 on Mar 27, 2026. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $925,600, with a rent estimate of $4,015/month.

Home Details for 21010 Cornerstone Dr

Interior Features

Heating & Cooling
Heating: Forced AirAir ConditioningCooling System: CentralHeating Fuel: Forced Air
Interior Details
Types of Rooms: Walk In Closet, Family Room, Master Bath
Appliances & Utilities
DishwasherDryerMicrowaveRefrigeratorWasher
Levels, Entrance, & Accessibility
Floors: Carpet, Hardwood

Property Information

Year Built
Year Built: 2018
Property Type / Style
Property Type: Condo

Exterior Features

Parking & Garage
GarageParking Spaces: 2Parking: Garage Attached

Price & Status

Price
Price Per Sqft: $370/sqft

Community

Units in Building: 1

Lot Information

Lot Area: 0.40 acres

Price and Tax history

DateEventPrice
Mar 27, 2026
Source: N/A
Sold
$677,000
Dec 3, 2021
Source: N/A
Sold
$847,000
Nov 4, 2021
Source: RE/MAX International #TR21234934
Pending
$799,800
Nov 4, 2021
Source: CRMLS #TR21234934
Contingent
$799,800
Oct 25, 2021
Source: CRMLS #TR21234934
Listed For Sale
$799,800

Market trends in Walnut

Last updated August 2026
Buyer'sMarketSeller'sMarket
Avg. sale price
—
Sale-to-List Price
—
Price per sq ft
—
Available listings
84
5MoM

Around this home

What Locals Say about Walnut

This October

Trick-or-Treat Score

Built from what locals say about this neighborhood.
  • 88% say there are sidewalks
  • 63% say there's holiday spirit
  • 47% say neighbors are friendly
Trulia Trick or TreatStart Ghost Hunt
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

Frequently asked questions about 21010 Cornerstone Dr

  • What is 21010 Cornerstone Dr estimated to be worth?
    Trulia's estimated value for 21010 Cornerstone Dr in Walnut, CA is $925,600.
  • What is the price history for 21010 Cornerstone Dr?
    21010 Cornerstone Dr in Walnut, CA last sold for $677,000 in March 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 21010 Cornerstone Dr have air conditioning?
    Yes, 21010 Cornerstone Dr in Walnut, CA has air conditioning.
  • Does 21010 Cornerstone Dr have laundry facilities?
    Yes, 21010 Cornerstone Dr in Walnut, CA has in-unit laundry.

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