Welcome to 21000 Cornerstone Drive, a spacious three-story townhome located in the highly desirable Cornerstone community of Walnut. This well-maintained home offers 4 bedrooms and 3.5 bathrooms, including two private bedroom suites that provide flexibility for guests, multigenerational living, or a home office.
The open-concept main level features a bright living area, dining space, and a functional kitchen with granite countertops, a large center island, ample cabinetry, and stainless steel appliances. Freshly painted throughout, the home offers a clean, move-in-ready living environment. Additional features include wood flooring in the main living areas, in-unit laundry, central air conditioning, and an attached two-car garage.
Enjoy the convenience of being within walking distance to Walnut High School and Suzanne Middle School, both part of the award-winning Walnut Valley Unified School District. Community amenities include parks, playgrounds, BBQ areas, and beautifully maintained green spaces. Conveniently located near shopping, dining, and major freeways.
Move-in ready and available for immediate occupancy.
The open-concept main level features a bright living area, dining space, and a functional kitchen with granite countertops, a large center island, ample cabinetry, and stainless steel appliances. Freshly painted throughout, the home offers a clean, move-in-ready living environment. Additional features include wood flooring in the main living areas, in-unit laundry, central air conditioning, and an attached two-car garage.
Enjoy the convenience of being within walking distance to Walnut High School and Suzanne Middle School, both part of the award-winning Walnut Valley Unified School District. Community amenities include parks, playgrounds, BBQ areas, and beautifully maintained green spaces. Conveniently located near shopping, dining, and major freeways.
Move-in ready and available for immediate occupancy.
Property Details
Price:
$4,200
MLS #:
TR26129798
Status:
Active
Beds:
4
Baths:
4
Type:
Single Family
Subtype:
Townhouse
Neighborhood:
668walnut
Listed Date:
Jun 14, 2026
Finished Sq Ft:
1,830
Lot Size:
17,424 sqft / 0.40 acres (approx)
Year Built:
2017
See this Listing
Schools
School District:
Walnut Valley Unified
Interior
Appliances
DW, GD, MW, GER, _6BS
Bathrooms
3 Full Bathrooms, 1 Half Bathroom
Cooling
CA
Flooring
WOOD, CARP
Heating
CF
Interior Features
GRNC, LRBA, OFP, BL
Laundry Features
IR
Levels
C
Main Level Bathrooms
1
Main Level Bedrooms
1
Exterior
Attached Garage YN
1
Common Walls
_1CW
Community Features
SDW, SL
Garage Spaces
2
Parking Spots
2
Parking Total
2
Security Features
SD, COD
View
CI, CY, PK
Financial
Map
Community
- Address21000 Cornerstone DR Walnut CA
- CityWalnut
- CountyLos Angeles
- Zip Code91789
Market Summary
Current real estate data for Single Family in Walnut as of Jun 17, 2026
96
Single Family Listed
69
Avg DOM
489
Avg $ / SqFt
$1,432,702
Avg List Price
Property Summary
- 21000 Cornerstone DR Walnut CA is a Single Family for sale in Walnut, CA, 91789. It is listed for $4,200 and features 4 beds, 4 baths, and has approximately 1,830 square feet of living space, and was originally constructed in 2017. The current price per square foot is $2. The average price per square foot for Single Family listings in Walnut is $489. The average listing price for Single Family in Walnut is $1,432,702.
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