1 / 2

$3,975

20980 Cornerstone

Walnut, CA 91789

Active

Beds

Baths

1,760

Sq. Ft.

2018

Year Built

Los Angeles

County

Condominium

Property Type

About this home

Stunning, move-in-ready 3-story contemporary townhome built by Shea Homes in 2018, located in the heart of Walnut! Situated in the exclusive and quiet 31-unit Cornerstone community, this bright and airy home features 3 bedrooms, 3.5 bathrooms, and 1,760 sq. ft. of modern living space with an open-concept design. Main level offers a highly desirable bedroom and full bathroom—perfect for guests, multigenerational living, or a private home office. Second level boasts an expansive living area flooded with natural light, a convenient powder room (half bath), and a gourmet chef's kitchen complete with a massive center island, sleek countertops, and an included refrigerator. Upper level serves as a private sanctuary featuring a luxurious primary suite with a large walk-in closet and en-suite bath, alongside a third bedroom with its own bathroom, and a dedicated individual laundry room (washer/dryer included). Complete with central A/C and heating, an attached 2-car garage, and great community amenities including a park, playground, and outdoor cooking/BBQ area. Incredibly convenient location close to supermarkets, gas stations, dining, easy freeway access, and just 3 minutes to Walnut High School (top-rated Walnut Valley Unified School District). A must-see!

Listed by David Wang · DRE #01263424 · Country Bridge Realty

MLS #1174623597

ListedJun 14, 2026

Property Details

Architecture

Stories3

StyleN/A

Total Units31

RoofN/A

Garage Spaces2

PoolN/A

SpaN/A

Features & Amenities

Interior FeaturesBalcony, Attic

Exterior FeaturesN/A

FlooringN/A

CoolingCentral Air

HeatingCentral

FireplaceNone

LaundryInside, Upper Level

Parking FeaturesN/A

Parking Total2

Patio & PorchN/A

Entry Level1

Entry Locationenter

Common WallsTwo Common Walls Or More

Property Features

Lot Size0.40 ac

Lot FeaturesN/A

ViewNone

DirectionsFrom Valley Blvd, turn south onto N Grand Ave, turn right onto La Puente Rd, then left onto Cornerstone Dr.

Community

Area668 - Walnut

School DistrictWalnut Valley Unified

Tax & Financial

TermsN/A

Land LeaseN/A

HOA NameCornerstone HOA

HOA FeeN/A

Request a Tour

Mortgage Estimate

$21/mo

20% down · 7% APR · 30-yr fixed

Purchase PriceDown Payment: 20%Interest Rate: 7%

Estimate only. Does not include taxes, insurance, or HOA.

Last updated: October 21, 2026 at 5:30 PM

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