---
listing_id: CRPW26223459
status: Active
price: 948000
beds: 4
baths_full: 3
baths_half: 0
sqft_living: 1830
sqft_lot: 17474
lot_acres: 0.401
year_built: 2018
property_type: Residential
property_subtype: Condominium
address: "21010 Cornerstone"
city: Walnut
state: CA
zip: 91789
county: "Los Angeles County"
lat: 34.0174398
lng: -117.8478792
days_on_market: 2
hoa_fee: 306
hoa_frequency: Monthly
garage_spaces: 2
list_agent: "AJ Hoover"
list_office: "Seven Gables Real Estate"
list_agent_phone: "–"
list_agent_license: 02040196
mls_source: CRMLS
modified: 2026-10-16
transaction_type: buy
---

Home | Los Angeles County | Walnut | 91789 | 21010 Cornerstone

21010 Cornerstone, Walnut, CA 91789

MLS: CRPW26223459 | Status: Active | Price: $948,000
Beds/Baths: 4 / 3
Property Type: Residential

Quick Facts

Beds Baths Sq Ft Acres Lot Yr Built
4 3 1,830 0.401 2018

Upcoming Open Houses

Date Time Hosted By
Saturday, October 17 12:00 pm - 2:00 pm AJ Hoover
Sunday, October 18 12:00 pm - 2:00 pm AJ Hoover

Remarks

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 c

MLS Listing Information

Field Value
MLS # CRPW26223459
MLS Source California Regional MLS
Days on Site 2

Features

Interior Features

Feature Details
Bedrooms Primary Suite/Retreat
Appliances Dishwasher, Microwave, Other, Oven Range - Gas, Refrigerator, Dryer, Washer
Dining Room Formal Dining Room, In Kitchen
Fireplace None
Flooring Laminate
Laundry In Laundry Room, Other
Cooling Central Forced Air
Heating Central Forced Air

Exterior Features

Feature Details
Roof Tile
Pool Community Facility, Spa - Community Facility

Parking, School, and Other Information

Feature Details
Garage/Parking Garage, Garage: 2 Car(s)
Elementary District Walnut Valley Unified
High School District Walnut Valley Unified
HOA Fee $306
HOA Fee Frequency Monthly
Complex Amenities Barbecue Area, Picnic Area, Playground

Contact Information

AJ Hoover
Seven Gables Real Estate
License #: 02040196
Phone: –

School Ratings

School data provided by GreatSchools.org

Nearby Schools

School Type Grades Distance Rating
Walnut High School public 9-12 0.35 mi 10
Suzanne Middle School public 6-8 0.55 mi 10
Vejar Elementary School public K-5 0.74 mi 8
Ron Hockwalt Academies (Continuation) School public 9-12 0.81 mi N/A
Walnut Elementary School public K-5 1.12 mi 9
Cyrus J. Morris Elementary School public K-5 1.20 mi 8
Walnut Valley Adult public UG 1.26 mi N/A
Leonard G. Westhoff Elementary School public K-5 1.74 mi 9
Armstrong Elementary School public K-6 1.75 mi 5
South Pointe Middle School public 6-8 1.79 mi 10
Hollingworth Elementary School public K-6 1.92 mi 8
Stanley G. Oswalt Academy public K-8 1.94 mi 8
Maple Hill Elementary School public K-5 1.95 mi 10
Collegewood Elementary School public K-5 2.24 mi 9
Lorbeer Middle School public 7-8 2.24 mi 5
Telesis Academy Of Science & Math public K-8 2.25 mi 4
Chaparral Middle School public 6-8 2.27 mi 10
Nogales High School public 9-12 2.29 mi 4
Ybarra Academy For The Arts And Technology public K-8 2.29 mi 8
Diamond Bar High School public 9-12 2.55 mi 10

Nearby Homes

Address Price Beds Baths Sq Ft Status
1034 E Romney Dr $768,000 4 3 1,846 Active
20950 Cornerstone Dr $938,888 4 3/1 1,830 Contingent
22915 Colombard Ln 4 $810,000 3 3 1,570 Active

Disclosures

©2026 California Regional MLS. All rights reserved. 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 provided is for personal, non-commercial use by the viewer and may not be redistributed without explicit authorization from California Regional MLS.

Presently MLSListings.com displays Active, Contingent, Pending, and Recently Sold listings. Recently Sold listings are properties which were sold within the last three years. After that period listings are no longer displayed in MLSListings.com. Pending listings are properties under contract and no longer available for sale. Contingent listings are properties where there is an accepted offer, and seller may be seeking back-up offers. Active listings are available for sale.

This listing information is up-to-date as of October 16, 2026. For the most current information, please contact AJ Hoover.