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21010 Cornerstone Walnut, CA 91789
$948,000 4 beds, 3 baths
1, 830 sqft
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SELLER-PAID BUYER INCENTIVES AVAILABLE! From assistance with closing costs to a potential interest rate buydown, seller contributions may help bring your homeownership goals within reach. Subject to buyer qualification, lender approval, seller contribution limits, and acceptable terms. Welcome to 21010 Cornerstone, nestled in a highly sought-after neighborhood in Walnut. This spacious 4-bedroom, 3-bathroom home offers a wonderful blend of comfort, functionality, and inviting living spaces, making it an ideal place to call home. The thoughtfully designed interior features an updated kitchen that opens seamlessly into a spacious living room, creating an open and welcoming atmosphere perfect for entertaining guests or enjoying everyday living. The expansive main living area provides plenty of room to gather with family and friends, while a beautiful private balcony just off the living space offers the perfect spot to enjoy the fresh air, unwind, and relax. The generously sized primary suite serves as a comfortable retreat, complete with a walk-in closet and an en-suite bathroom featuring a dual-sink vanity and walk-in shower. Additional conveniences include a dedicated laundry room and an attached two-car garage, providing practical storage and everyday ease. Beyond the home itself, residents can enjoy a desirable community lifestyle with access to a swimming pool, neighborhood park, and BBQ area—ideal for outdoor recreation, gatherings, and making lasting memories. Located within a community surrounded by award-winning schools, this property offers an appealing combination of space, convenience, and lifestyle in the heart of Walnut. With its inviting layout, desirable amenities, and sought-after location, 21010 Cornerstone presents a wonderful opportunity to enjoy comfortable living in a welcoming community.

Listing Details

Property type: Condominium (Condo/Coop/Townhouse)
Status: Active Under Contract
MLS# PW26223459
List price is $948,000
HOA Fee is $306.00
Beds: 4
Baths: 3 (3 full)
None fireplaces
Built in 2018
1,830 sqft
2 stories
0.40 acres
Lot size: 0.4011
County: Los Angeles
Construction: Stucco
Interior features: Separate/Formal Dining Room,Eat-in Kitchen,Granite Counters,Multiple Staircases,Stone Counters,Entrance Foyer,Walk-In Closet(s)
Exterior features: Rain Gutters
Appliances: Dishwasher,Gas Range,Microwave,Refrigerator,Dryer,Washer
Parking description: Garage
Heating/cooling: Central Air
Heating description: Central
MLS area: 668 - Walnut

Last Updated: 10/29/2026

 Find more Walnut homes and real estate

 Find more homes in 91789 zip code

This listing belongs to the 668 - Walnut MLS area

Lat/Long: 34.017370, -117.847958.
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Listing Agent: AJ Hoover
Lic#: 01276603
Office Name: Tustin

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Area Overview

Total population of , which has changed by % since 1990.
The median age of the population is , while the median age of dwellings is .
Out of households, are families.

Community Characteristics:

Occupancy Type

White/Blue Collar Jobs

Population by Gender

Hispanic/Non-Hispanic Population

Compared to National:

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