20940 Cornerstone Dr, Walnut, CA 91789
OFF MARKET

20940 Cornerstone Dr
Walnut, CA 91789

  • 4 Beds
  • 3 Baths
  • 1,830 sqft

$1,030,300

Trulia Estimate
as of Aug 13, 2026
Est. Refi. Payment $6,276/mo*
Refinance Your Home

$1,030,300

Trulia Estimate
as of Aug 13, 2026
Est. Refi. Payment $6,276/mo*
Refinance Your Home
4 Beds
3 Baths
1,830 sqft

Home Value

Trulia Estimate
$1.03M
Since last month
Decreased$28K (-2.7%)
Since last year
Decreased$40K (-3.8%)
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 +48% in the last 10 years
MonthEstimated value
2026
August 2026$1.03M
July 2026$1.04M
June 2026$1.06M
May 2026$1.04M
April 2026$1.06M
March 2026$1.11M
February 2026$1.07M
January 2026$1.05M
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
20956 Cornerstone Dr, Walnut, CA
0.00
Condo
$888,000
10/16/25
4
3
1,760
21010 Cornerstone Dr, Walnut, CA
0.05
Condo
$677,000
03/27/26
4
3
1,830
21002 Cornerstone Dr, Walnut, CA
0.05
Condo
$971,000
04/02/26
4
3
1,800
20916 Jade Dr, Walnut, CA
0.06
Condo
$915,000
09/04/25
4
3.5
1,760
860 Windwood Dr, Diamond Bar, CA
0.92
Condo
$180,000
09/10/25
3
2
1,136
810 Silver Fir Rd, Diamond Bar, CA
0.82
Condo
$495,000
09/02/25
2
1
878
720 Windwood Dr, Diamond Bar, CA
0.80
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
0.93
Condo
$499,999
11/07/25
2
1
878
1131 Loxley Pl, Diamond Bar, CA
1.36
Condo
$800,000
03/13/26
3
2.5
1,518

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
150 Greenleaf Dr, Walnut, CA 91789
0.03
$1,295,600
5
4
2,364
Off Market
20956 Cornerstone Dr, Walnut, CA 91789
0.00
$888,000
3
3.5
1,760
Recently Sold
130 Greenleaf Dr, Walnut, CA 91789
0.02
$1,063,100
4
3.5
1,931
Off Market
151 Redstone Dr, Walnut, CA 91789
0.03
$1,425,300
4
3
2,364
Off Market
20980 Cornerstone Dr, Walnut, CA 91789
0.03
$940,000
3
3.5
1,760
Off Market
20968 Cornerstone Dr, Walnut, CA 91789
0.03
$939,500
3
3.5
1,880
Off Market
159 Redstone Dr, Walnut, CA 91789
0.06
$1,379,500
4
3
2,316
Off Market
20916 Jade Dr, Walnut, CA 91789
0.06
$912,700
4
3.5
1,760
Off Market
155 Blue Crystal Dr, Walnut, CA 91789
0.05
$1,312,800
4
3
2,072
Off Market
21002 Cornerstone Dr, Walnut, CA 91789
0.05
$971,000
4
3
1,800
Recently Sold
159 Sterling Dr, Walnut, CA 91789
0.09
$1,396,500
4
3
2,183
Off Market
20848 Fuero Dr, Walnut, CA 91789
0.13
$1,506,100
5
3
3,148
Off Market

Local Information

  • Map ViewExplore the area around 20940 Cornerstone Dr.
-- mins to
Commute Destination

Home Highlights

Property Type
Condo
Year Built
2018
Living Area
1,830 sqft
Price/Sqft
$563

About this House

This condo is located at 20940 Cornerstone Dr, Walnut, CA. 20940 Cornerstone Dr is in Walnut, CA and in ZIP code 91789. This property has 4 bedrooms, 3 bathrooms and approximately 1,830 sqft of floor space. This property has a lot size of 0.40 acres and was built in 2018.
20940 Cornerstone Dr, Walnut, CA 91789 is a 4 bedroom, 3 bathroom, 1,830 sqft condo built in 2018. It is currently off market. The Trulia Estimate is $1,030,300, with a rent estimate of $3,944/month.

Home Details for 20940 Cornerstone Dr

Interior Features

Heating & Cooling
Heating: OtherAir ConditioningCooling System: CentralHeating Fuel: Other

Property Information

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

Community

Units in Building: 1

Lot Information

Lot Area: 0.40 acres

Price and Tax history

YearProperty taxTax assessment
2025
$10,404
$830,611
Home facts updated by county records

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
Skip to last item
  • Results are loading
Skip to first item

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

  • 29 % 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

Apartments for Rent

Skip to last item
Skip to first item

Explore by feature - Pet Friendly

10 pet-friendly rentals in Walnut, CA

Explore by feature - Garage

17 rentals with a garage in Walnut, CA

Explore by feature - Air Conditioning

21 rentals with air conditioning in Walnut, CA

Explore by feature - Washer/dryer

13 rentals with a washer/dryer in Walnut, CA

Explore by feature - Outdoor Space

11 rentals with an outdoor space in Walnut, CA

Homes for sale near 20940 Cornerstone Dr

Skip to last item
Skip to first item

Off Market Homes Near 20940 Cornerstone Dr

Skip to last item
Skip to first item

Frequently asked questions about 20940 Cornerstone Dr

  • What is 20940 Cornerstone Dr estimated to be worth?
    Trulia's estimated value for 20940 Cornerstone Dr in Walnut, CA is $1,030,300.
  • 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.
  • What are the closest schools to 20940 Cornerstone Dr?
    The closest schools to 20940 Cornerstone Dr in Walnut, CA are Suzanne Middle School (rated 10/10), Vejar Elementary School (rated 8/10), Walnut High School (rated 10/10).
  • Does 20940 Cornerstone Dr have air conditioning?
    Yes, 20940 Cornerstone Dr in Walnut, CA has air conditioning.