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21055 Stonybrook Drive, Walnut, CA 91789

$2,200,000 Approx. USD 5 beds, 3 baths
3,216 sqft

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Berkshire Hathaway HomeServices California Properties 11828 Rancho Bernardo Rd, Ste 210
San Diego, CA 92128 888-995-7575

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Listing Agent

Guo Hui He | gerryhe123@gmail.com
Lic#: 01931347
Broker: Courtesy of REALTY ONE GROUP WEST
Phone: 949-297-2020

Agent Remarks

Welcome to 21055 Stonybrook Rd, Walnut, CA 91789 — a rare private estate located in one of Walnut’s most desirable neighborhoods and served by the highly acclaimed Westhoff Elementary School in the award-winning Walnut Valley Unified School District. This beautifully upgraded home features 5 spacious bedrooms, 3 bathrooms, one enormous bedroom can be either bedroom or playroom perfect for a game room, home theater, gym, or children’s entertainment space. Thoughtfully updated throughout, the home offers both comfort and functionality with an ideal layout for modern living and entertaining. Situated behind gates for added privacy and security, the property welcomes you with a long private driveway leading to the home, creating a peaceful estate-like setting. Nestled on an expansive 1.07-acre lot, this exceptional property offers incredible space and future potential, including room for an ADU or guest house. The resort-style backyard is truly an entertainer’s dream, featuring a large sparkling pool and spa surrounded by mature landscaping and open space. Whether hosting gatherings, relaxing with family, or enjoying the serene setting, this backyard offers endless possibilities for indoor-outdoor California living. Rarely does a property combine privacy, acreage, luxury amenities, top-rated schools, and future expansion potential all in one exceptional offering. Conveniently located near parks, shopping, dining, and easy freeway access, this Walnut gem truly has it all. Don’t miss this extraordinary opportunity to own a private estate in the heart of Walnut!

Listing Details

Property type: Single Family Residence (Single Family)

Status: Active

MLS# CV26120174

Price: $2,200,000

HOA Fee is $0.00

Beds: 5

Baths: 3 (3 full)

Dining Room fireplaces

Built in 1988

3,216 sqft

2 stories

1.07 acres

Lot size: 1.0687

County: Los Angeles

Interior features: Ceiling Fan(s)

Appliances: Dishwasher,Gas Range,Dryer,Washer

Parking description: Driveway,Garage Faces Front

Lot description: ZeroToOneUnitAcre

Heating/cooling: Central Air

Heating description: Central

MLS area: 668 - Walnut

Last Updated: 6/25/2026

Days On Market (DOM): 20

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This listing belongs to the 668 - Walnut MLS area

Lat/Long: 34.037926, -117.844449.
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