20992 Cornerstone Dr, Walnut, CA 91789
Property image
Property image
OFF MARKET

$951,200

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

20992 Cornerstone Dr, Walnut, CA 91789

Est. Refi. Payment $6,088/mo*
Refinance Your Home
Currently Off Market - Sold Feb 9, 2018 for $718,000

Home Value

Trulia Estimate
$951K
Since last month
Decreased$8K (-0.8%)
Since last year
Decreased$33K (-3.3%)
Since last sale
Increased$233K (+32.5%)
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 +31% in the last 10 years
MonthEstimated value
2026
September 2026$951K
August 2026$959K
July 2026$976K
June 2026$980K
May 2026$977K
April 2026$1M
March 2026$1.01M
February 2026$992K
January 2026$974K
2025
2024
2023
2022
2021
2020
2019
2018

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
21010 Cornerstone Dr, Walnut, CA
0.00
Condo
$677,000
03/27/26
4
3
1,830
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
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
$941,200
3
3.5
1,760
Off Market
20968 Cornerstone Dr, Walnut, CA 91789
0.03
$923,700
3
3.5
1,880
Off Market
21002 Cornerstone Dr, Walnut, CA 91789
0.00
$971,000
4
3
1,800
Recently Sold
20956 Cornerstone Dr, Walnut, CA 91789
0.05
-
3
3.5
1,760
Off Market
20950 Cornerstone Dr, Walnut, CA 91789
0.05
$968,888
4
3.5
1,830
For Sale
151 Redstone Dr, Walnut, CA 91789
0.05
$1,412,400
4
3
2,364
Off Market
155 Blue Crystal Dr, Walnut, CA 91789
0.04
$1,296,400
4
3
2,072
Off Market
150 Greenleaf Dr, Walnut, CA 91789
0.07
$1,294,800
5
4
2,364
Off Market
159 Redstone Dr, Walnut, CA 91789
0.07
$1,361,200
4
3
2,316
Off Market
159 Sterling Dr, Walnut, CA 91789
0.06
$1,380,800
4
3
2,183
Off Market
20916 Jade Dr, Walnut, CA 91789
0.11
$912,100
4
3.5
1,760
Off Market

Local Information

  • Map ViewExplore the area around 20992 Cornerstone Dr.
  • Schools1 Elementary School1 Middle School1 High School
  • Shop & Eat
-- mins to
Commute Destination

Home Highlights

Condo
Built in 2018
1,830 sqft
$520/sqft

About this House

What's unique:Private balconyBright and spacious residenceContemporary finishesLarge center islandConvenient upstairs laundry roomCorner end-unit home
Brand new spacious condominium in Walnut. Corner unit offering 4 bedrooms and 3.5 baths. Very open floor plan with an expansive kitchen and large island for entertaining. This home is beautifully upgraded with designer selected counter tops and flooring.
20992 Cornerstone Dr, Walnut, CA 91789 is a 4 bedroom, 3 bathroom, 1,830 sqft condo built in 2018. It last sold for $718,000 on Feb 9, 2018. More recently, it was listed as a rental in April 2026 with an asking price of $4,200 per month. That rental listing was removed on May 4, 2026. This property is not currently displayed as for sale or rent on Trulia. The Trulia Estimate is $951,200, with a rent estimate of $3,848/month.

Home Details for 20992 Cornerstone Dr

Property Information

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

Interior Features

Heating & Cooling
Air ConditioningCooling System: Central

Community

Units in Building: 1

Lot Information

Lot Area: 0.40 acres

Price and Tax history

DateEventPrice
May 4, 2026
Source: CRMLS #SB26083944
ListingRemoved
$4,200
Apr 19, 2026
Source: CRMLS #SB26083944
Listed For Rent
$4,200
Feb 9, 2018
Source: CRMLS #OC17207822
Sold
$718,000

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

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 20992 Cornerstone Dr

  • What is 20992 Cornerstone Dr estimated to be worth?
    Trulia's estimated value for 20992 Cornerstone Dr in Walnut, CA is $951,200.
  • What is the price history for 20992 Cornerstone Dr?
    20992 Cornerstone Dr in Walnut, CA last sold for $718,000 in February 2018.
  • 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 20992 Cornerstone Dr have air conditioning?
    Yes, 20992 Cornerstone Dr in Walnut, CA has air conditioning.

Explore by feature - Pet Friendly

9 pet-friendly rentals in Walnut, CA

Explore by feature - Garage

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Explore by feature - Air Conditioning

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Explore by feature - Pool

6 rentals with a pool in Walnut, CA

Explore by feature - Washer/dryer

21 rentals with a washer/dryer in Walnut, CA

Explore by feature - Outdoor Space

11 rentals with an outdoor space in Walnut, CA

Apartments for Rent

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Off Market Homes Near 20992 Cornerstone Dr

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