---
listing_id: CRTR26146812
status: Active
price: 3850
beds: 4
baths_full: 3
baths_half: 1
sqft_living: 1830
sqft_lot: 17461
lot_acres: 0.4
year_built: 2018
property_type: Residential Lease
property_subtype: Condominium for Rent
address: "21020 Cornerstone"
city: Walnut
state: CA
zip: 91789
county: "Los Angeles County"
lat: 34.0175517
lng: -117.8476417
days_on_market: 8
hoa_fee: 
hoa_frequency: 
garage_spaces: 2
list_agent: "January Lee"
list_office: "Coldwell Banker Envision"
list_agent_phone: "–"
list_agent_license: 01095604
mls_source: CRMLS
modified: 2026-07-07
transaction_type: rent
---

Home | Los Angeles County | Walnut | 91789 | 21020 Cornerstone

21020 Cornerstone, Walnut, CA 91789

MLS: CRTR26146812 | Status: Active | Price: $3,850
Beds/Baths: 4 / 3 /1
Property Type: Residential Lease

Quick Facts

Beds Baths Sq Ft Acres Lot Yr Built
4 3 /1 1,830 0.4 2018

Remarks

2018-built luxury condo located in the highly desirable Cornerstone community of Walnut, within walking distance to Walnut High School and Suzanne Middle School in the prestigious Walnut Valley Unified School District. This tastefully appointed 3-story home offers 4 bedrooms and 3.5 bathrooms, including a convenient main-level bedroom and full bath, perfect for guests or a home office. The open-concept floor plan features a spacious living and dining area and a gourmet kitchen with a large center island, quartz and granite countertops, designer backsplash, stainless steel appliances, and ample cabinetry. Thoughtful designer finishes throughout include recessed lighting, custom two-tone paint, plantation shutters, remote-controlled motorized shades, and wood and tile flooring. Recent improvements include brand-new wood flooring in all bedrooms, a new dishwasher, and a new range hood. Additional features include an upstairs laundry room, central air conditioning, an attached two-car garage, and a refrigerator, washer, and dryer included. Enjoy the community park featuring a children’s playground, BBQ area, and lush green spaces, along with the home’s prime location near shopping, dining, and major freeways. Move-in ready and available for immediate occupancy.

MLS Listing Information

Field Value
MLS # CRTR26146812
MLS Source California Regional MLS
Days on Site 8

Features

Interior Features

Feature Details
Bedrooms Ground Floor Bedroom, Primary Suite/Retreat
Appliances Dishwasher, Garbage Disposal, Hood Over Range, Other, Refrigerator, Dryer, Washer
Dining Room Breakfast Bar, Formal Dining Room, In Kitchen
Fireplace None
Laundry In Laundry Room, Other
Cooling Central Forced Air
Heating Central Forced Air

Exterior Features

Feature Details
Roof Tile
Pool None

Parking, School, and Other Information

Feature Details
Garage/Parking Garage: 2 Car(s)
Elementary District Walnut Valley Unified
High School District Walnut Valley Unified

Rental Information

Feature Details
Rent Includes AssociationFees

Contact Information

January Lee
Coldwell Banker Envision
License #: 01095604
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 0.54 mi 10
Vejar Elementary School public K-5 0.76 mi 8
Ron Hockwalt Academies (Continuation) School public 9-12 0.82 mi N/A
Walnut Elementary School public K-5 1.13 mi 9
Cyrus J. Morris Elementary School public K-5 1.22 mi 8
Walnut Valley Adult public UG 1.27 mi N/A
Armstrong Elementary School public K-6 1.74 mi 5
Leonard G. Westhoff Elementary School public K-5 1.74 mi 9
South Pointe Middle School public 6-8 1.80 mi 10
Hollingworth Elementary School public K-6 1.94 mi 8
Maple Hill Elementary School public K-5 1.95 mi 10
Stanley G. Oswalt Academy public K-8 1.95 mi 8
Lorbeer Middle School public 7-8 2.23 mi 5
Collegewood Elementary School public K-5 2.23 mi 9
Chaparral Middle School public 6-8 2.26 mi 10
Telesis Academy Of Science & Math public K-8 2.26 mi 4
Nogales High School public 9-12 2.30 mi 4
Ybarra Academy For The Arts And Technology public K-8 2.30 mi 8
Diamond Bar High School public 9-12 2.56 mi 10

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.

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This listing information is up-to-date as of July 07, 2026. For the most current information, please contact January Lee.