20992 Cornerstone Dr, Walnut, CA 91789
OFF MARKET

20992 Cornerstone Dr
Walnut, CA 91789

  • 4 Beds
  • 3 Baths
  • 1,830 sqft

$1,004,800

Trulia Estimate
as of May 10, 2026
Est. Refi. Payment $5,893/mo*
Refinance Your Home

$1,004,800

Trulia Estimate
as of May 10, 2026
Est. Refi. Payment $5,893/mo*
Refinance Your Home
4 Beds
3 Baths
1,830 sqft

Homes for sale near 20992 Cornerstone Dr

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Apartments for Rent

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Local Information

Map showing home location
© Google
-- mins to
Commute Destination

Description

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.
This property is off market, which means it's not currently listed for sale or rent on Trulia. This may be different from what's available on other websites or public sources.

Home Highlights

Parking
No Info
Outdoor
No Info
A/C
Heating & Cooling
HOA
None
Price/Sqft
No Info
Listed
No Info

Home Details for 20992 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 History for 20992 Cornerstone Dr

DatePriceEventSource
05/04/2026$4,200ListingRemovedCRMLS #SB26083944
04/19/2026$4,200Listed For RentCRMLS #SB26083944
02/09/2018$718,000Sold
CRMLS #OC17207822
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Property Tax and Assessment

Year2025
Tax$10,182
Assessment$816,957
Home facts updated by county records

Comparable Sales for 20992 Cornerstone Dr

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
20916 Jade Dr, Walnut, CA
0.11
Condo
$915,000
09/04/25
4
3.5
1,760
816 Silver Fir Rd, Diamond Bar, CA
0.84
Condo
$590,000
06/18/25
2
2
1,136
715 Windwood Dr, Diamond Bar, CA
0.79
Condo
$545,000
08/12/25
2
1
882
860 Windwood Dr, Diamond Bar, CA
0.94
Condo
$180,000
09/10/25
3
2
1,136
810 Silver Fir Rd, Diamond Bar, CA
0.84
Condo
$495,000
09/02/25
2
1
878
1020 Gona Ct, Diamond Bar, CA
1.30
Condo
$887,000
05/13/25
3
2.5
1,846
607 Alder Ln, Diamond Bar, CA
0.77
Condo
$400,000
08/26/25
2
3
1,368

Assigned Schools

These are the assigned schools for 20992 Cornerstone Dr.
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The GreatSchools Rating compares schools on a variety of school quality indicators including test scores, college readiness, equity and more. Learn more.

What Locals Say about Walnut

At least 123 Trulia users voted on each feature.

  • 88 % Say there are sidewalks

  • 88 % Say parking is easy

  • 81 % Say car is needed

  • 80 % Say yards are well-kept

  • 80 % Say it's dog friendly

  • 74 % Say it's quiet

  • 71 % 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

  • 43 % Say it's walkable to restaurants

  • 43 % Say kids play outside

  • 29 % Say there are community events

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

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Homes for rent near 20992 Cornerstone Dr

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Off Market Homes Near 20992 Cornerstone Dr

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Explore by feature

20992 Cornerstone Dr, Walnut, CA 91789 is a 4 bedroom, 3 bathroom, 1,830 sqft condo built in 2018. This property is not currently available for sale. 20992 Cornerstone Dr was last sold on Feb 9, 2018 for $718,000. The current Trulia Estimate for 20992 Cornerstone Dr is $1,004,800.