For Sale
Condo for sale at 21010 Cornerstone, Walnut, CA 91789 | MLS# PW26223459 | Listing updated on 2026-10-27
Photo 1 of Condo for sale at 21010 Cornerstone, Walnut, CA 91789 | MLS# PW26223459 | Listing updated on 2026-10-27
Photo 2 of Condo for sale at 21010 Cornerstone, Walnut, CA 91789 | MLS# PW26223459 | Listing updated on 2026-10-27
Photo 3 of Condo for sale at 21010 Cornerstone, Walnut, CA 91789 | MLS# PW26223459 | Listing updated on 2026-10-27
Photo 4 of Condo for sale at 21010 Cornerstone, Walnut, CA 91789 | MLS# PW26223459 | Listing updated on 2026-10-27
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Listed by: AJ Hoover DRE #02040196 | Seven Gables Real Estate (714) 731-3777

$948,000

Monthly Est:$4,719

  • Beds Icon4 Beds
  • Beds Icon
    3 Baths
  • Beds Icon1,830sqft

21010 Cornerstone, Walnut, CA 91789

$4,719/moEst:

Get Pre-Approved

  • Condominium

  • Built in 2018

  • $306/mo HOA

  • 17,474 sqft lot

  • $518/sq.ft

Description

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.

  • Houzeo last checked: 1 hour ago
  • Listing updated: October 27, 2026 at 12:33 am
  • Source: California Regional MLS-CA | MLS#: PW26223459 California Regional MLS-CA

This condo is in:

Property Details

  • Status

    Active

  • Type

    Condominium

  • No. of Stories

    3

  • County

    Los Angeles County

  • City

    Walnut

  • Neighborhood

    --

  • Year Built

    2018

  • HOA Fees

    $306/mo

  • Finished Area

    1,830 sqft

  • Lot Size

    17,474 sqft lot

  • Basement Area

    - sqft

  • MLS Name

    California Regional MLS

  • MLS Number

    PW26223459

  • MLS Status

    Active

  • Days on Market

    14

  • Cumulative Days on Market

    12

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Location

HOA Management

Cornerstone Homeowners Association

HOA Fees

$306/ Monthly

Amenities

Amenities and services may be covered by one or multiple associations and service providers.

Park Playground Park Playground

PicnicArea PicnicArea

Barbecue Barbecue

Disclaimer: Amenities are based on third-party information and may vary; buyers must independently verify all amenities, as information is deemed reliable but not guaranteed.

Facts & Features

Rooms

  • Bedrooms & bathrooms

    Bedrooms: 4

    Bathrooms: 3

Interior

  • Interior Features

    Separate Formal Dining Room, Eat In Kitchen, Granite Counters, Multiple Staircases, Stone Counters, Entrance Foyer, Walk In Closets

  • Sewer

    Public Sewer

  • Exterior Features

    Rain Gutters

  • Heating

    Central

  • Appliances

    Dishwasher, Gas Range, Microwave, Refrigerator, Dryer, Washer

  • Flooring

    Laminate

  • Window Features

    Double Pane Windows

  • Cooling

    Central Air

Construction

  • Year Built

    Year Built: 2018

  • Home type

    Condominium

  • Property Condition

    Turnkey

  • Roof

    Tile

  • Construction Materials

    Stucco

Utilities & Energy

  • Laundry Features

    Inside, Laundry Room

  • Fireplace Features

    None

  • Water Source

    Public

  • Association Amenities

    Dog Park, Barbecue, Picnic Area, Playground

  • Parking Features

    Garage

  • Pool Features

    Community

Other Features

  • Patio And Porch Features

    Deck

  • Community Features

    Dog Park, Gutters, Park, Sidewalks, Pool

Price History

DateEventPrice

10/14/2026

Source: mls_logoCalifornia Regional MLS-CA #PW26223459

Off Market

$948,000

$518/sqft

10/14/2026

Source: mls_logoCalifornia Regional MLS-CA #PW26223459

Listed for Sale

$948,000

$518/sqft

Getting Around 21010 Cornerstone

Bike Score®

Bike Score

Somewhat Bikeable

38/100

Walk Score®

Walk Score

Car-Dependent

45/100

Data provided by Redfin

Nearby Homes

Based on information from California Regional Multiple Listing Service, Inc. as of Oct 29, 2026, 06:30AM and /or other sources. All data, including all measurements and calculations of area, is obtained from various sources and has not been, and will not be, verified by broker or MLS. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. Information being provided is for consumers’ personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. This website may not include listings or property addresses of sellers who have directed their listing brokers to withhold their listing or their property address from display on the Internet. © 2026 California Regional Multiple Listing Service. All Rights Reserved.

Advertising Broker: William Johnson DRE #01463271 | William Johnson Brokerage

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