21042 Cornerstone
Walnut, CA, 91789
$3,750
4 Beds
4 Baths
1,760 SqFt
0.46 Acres
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MLS #PW26015815 image #0
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.

Property Details

Price:
$3,750
MLS #:
PW26015815
Status:
Active
Beds:
4
Baths:
4
Type:
Single Family
Subtype:
Condominium
Neighborhood:
668walnut
Listed Date:
Jan 22, 2026
Finished Sq Ft:
1,760
Lot Size:
19,918 sqft / 0.46 acres (approx)
Year Built:
2018
Spanish668 – Walnut668walnutWalnut Valley UnifiedTrees/woods

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Schools

School District:
Walnut Valley Unified

Interior

Appliances
DW, GO, FSR
Bathrooms
3 Full Bathrooms, 1 Half Bathroom
Cooling
CA
Flooring
LAM, CARP
Heating
CF
Laundry Features
GE

Exterior

Architectural Style
SPN
Community Features
SUB
Parking Spots
2
Roof
SHN

Financial

Map

Community

Market Summary

Current real estate data for Single Family in Walnut as of Feb 22, 2026
90
Single Family Listed
55
Avg DOM
429
Avg $ / SqFt
$1,237,074
Avg List Price

Property Summary

    21042 Cornerstone Walnut CA is a Single Family for sale in Walnut, CA, 91789. It is listed for $3,750 and features 4 beds, 4 baths, and has approximately 1,760 square feet of living space, and was originally constructed in 2018. The current price per square foot is $2. The average price per square foot for Single Family listings in Walnut is $429. The average listing price for Single Family in Walnut is $1,237,074.

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21042 Cornerstone
Walnut, CA