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- Description
- Property Details
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- HOA Management
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Listed by: AJ Hoover DRE #02040196 | Seven Gables Real Estate (714) 731-3777
$948,000
Monthly Est:$4,719
4 Beds
- 3 Baths
3 full baths
1,830sqft
21010 Cornerstone, Walnut, CA 91789
$948,000
$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

This condo is in:
Property Details
Status
Active
Type
Condominium
No. of Stories
3
County
City
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
PicnicArea
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
| Date | Event | Price |
|---|---|---|
10/14/2026 Source: | Off Market | $948,000 $518/sqft |
10/14/2026 Source: | Listed for Sale | $948,000 $518/sqft |
Getting Around 21010 Cornerstone
Bike Score®
Somewhat Bikeable
38/100
Walk Score®
Car-Dependent
45/100
Data provided by Redfin
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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.
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