21042 Cornerstone Dr, Walnut, CA 91789
OFF MARKET

21042 Cornerstone Dr
Walnut, CA 91789

  • 4 Beds
  • 3.5 Baths
  • 1,760 sqft

$953,500

Trulia Estimate
as of May 22, 2026
Est. Refi. Payment $5,789/mo*
Refinance Your Home

$953,500

Trulia Estimate
as of May 22, 2026
Est. Refi. Payment $5,789/mo*
Refinance Your Home
4 Beds
3.5 Baths
1,760 sqft

Local Information

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

Description

This beautifully designed 4-bedroom, 3.5-bath 3-story condo blends contemporary finishes, thoughtful functionality, and an unbeatable location within the award-winning Walnut Valley Unified School District. The first floor welcomes you with a full bedroom and bath, perfect for extended family, guests, or a dedicated home office. The main living area on the second floor features laminate flooring, an open-concept layout, and a spacious great room ideal for gatherings. The modern kitchen offers a generous island with sleek quartz counters, granite perimeter countertops, and under-cabinet lighting for a bright, elevated cooking experience. On the top floor, you'll find the remaining bedrooms, including a tranquil primary suite, along with a conveniently located laundry room. This community is designed for ease and comfort, offering a neighborhood park with greenbelt views, a playground, and a BBQ area, perfect for unwinding, hosting, or weekend fun. Just minutes from the 60 & 57 freeways and close to the Walnut/Industry Metrolink Station, commuting to Los Angeles, Orange County, and the surrounding business hubs is effortless. The home is also within walking distance to Suzanne Middle School and Walnut High School two of the district's highest-ranked and most desired campuses.

Owner pays for HOA, tenant is responsible for all utilities. No pets.
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. This description is from February 18, 2026

Home Highlights

Parking
Attached Garage
Outdoor
No Info
A/C
Cooling only
HOA
None
Price/Sqft
No Info
Listed
93 days ago

Home Details for 21042 Cornerstone Dr

Property Information

Property Type / Style
Property Type: Apartment

Rental Terms, Policies & Fees

Lease Term: 1 YearAvailable: now

Interior Features

Appliances & Utilities
DishwasherRefrigerator
Heating & Cooling
Air ConditioningCooling System: Central Air
Levels, Entrance, & Accessibility
Floors: Carpet, Hardwood, Tile

Exterior Features

Parking & Garage
Parking: Attached, On Site

Price History for 21042 Cornerstone Dr

DatePriceEventSource
03/04/2026$3,750ListingRemovedZillow Rentals
02/18/2026$3,750Listed For RentZillow Rentals
02/18/2026$3,800ListingRemovedCRMLS #PW26015815
01/23/2026$3,800Listed For RentCRMLS #PW26015815
11/23/2024$3,700ListingRemovedCRMLS #PW24237086
11/20/2024$3,700Listed For RentCRMLS #PW24237086
10/05/2024$3,750ListingRemovedCRMLS #PW24116515
10/05/2024$3,750PriceChange
CRMLS #PW24116515
06/18/2024$3,850Listed For RentCRMLS #PW24116515
05/01/2019$3,000ListingRemovedAgent Provided
03/29/2019$3,000PriceChange
Agent Provided
02/16/2019$3,200PriceChange
Agent Provided
01/17/2019$3,300PriceChange
Agent Provided
12/26/2018$3,500Listed For RentAgent Provided
12/07/2018$685,000Sold
N/A
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Property Tax and Assessment

Year2025
Tax$9,545
Assessment$763,790
Home facts updated by county records

Comparable Sales for 21042 Cornerstone Dr

Address
Distance
Property Type
Sold Price
Sold Date
Bed
Bath
Sqft
23665 Golden Springs Dr #E-2, Diamond Bar, CA
2.34
Apartment
$320,000
08/29/25
2
2
949
2726 Calle Ruiz, West Covina, CA
2.84
Apartment
$615,000
04/09/26
3
2
1,502
23647 Golden Springs Dr #G-10, Diamond Bar, CA
2.33
Apartment
$310,000
07/10/25
2
1
807
23629 Golden Springs Dr #H-2, Diamond Bar, CA
2.34
Apartment
$290,000
11/12/25
2
1
807
23617 Golden Springs Dr #K-1, Diamond Bar, CA
2.34
Apartment
$310,000
10/22/25
1
1
768
2145 E Aroma Dr #88, West Covina, CA
3.78
Apartment
$400,000
02/05/26
2
1
968
524 S Astell Ave, West Covina, CA
5.24
Apartment
$1,260,000
12/05/25
3
2
1,202
1541 Stratus Dr, Pomona, CA
5.51
-
-
-
2
3
1,215
1030 Kent Dr, San Dimas, CA
5.77
Apartment
$255,000
12/10/25
3
2
1,140
338 E Kingsley Ave, Pomona, CA
6.62
Apartment
$1,000,000
07/03/25
6
6
2,374
Home facts updated by county records

Nearby homes

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Assigned Schools

These are the assigned schools for 21042 Cornerstone Dr.
View nearby schools on GreatSchools
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

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

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Homes for sale near 21042 Cornerstone Dr

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Off Market Homes Near 21042 Cornerstone Dr

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Homes for rent near 21042 Cornerstone Dr

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21042 Cornerstone Dr, Walnut, CA 91789 is a 4 bedroom, 4 bathroom, 1,760 sqft apartment. This property is not currently available for sale. 21042 Cornerstone Dr was last sold on Dec 7, 2018 for $685,000 (18,167% higher than the asking price of $3,750). The current Trulia Estimate for 21042 Cornerstone Dr is $953,500.