21055 Stonybrook Drive, Walnut, CA 91789

• 5 beds |
• 3 baths |
• 3,216 sqft

Property Description

Welcome to 21055 Stonybrook Rd, Walnut, CA 91789 a rare private estate located in one of Walnuts 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 childrens 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 entertainers 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. Dont miss this extraordinary opportunity to own a private estate in the heart of Walnut!

Listing Status:

Active

Date Added:

June 1, 2026

Data Last Updated:

July 5, 2026 at 1:11PM

Listing Office:

REALTY ONE GROUP WEST : 949-297-2020

Listing Agent:

Guo Hui He : 626-589-7924

MLS ID:

CV26120174

Interior

• Appliances: DishwasherDryerWasherGas Range
• Flooring: CarpetLaminate
• A/C: Central Forced Air
• Heating: Forced Air Unit
• Fireplace: FP in Dining Room

Exterior

• General: Private
• Pool: Below GroundPrivate
• Parking: Parking spaces: 3

Construction

• General: 2

Location

• HOA Amenities: 0.0
• Originating MLS: California Regional MLS
• County: Los Angeles

Lot

• Zoning: 8709061032
• View: Back Bay
• Fencing: Fair Condition

Utilities

• Utilities: Electricity ConnectedNatural Gas ConnectedSewer ConnectedWater Connected
• Water: Public
• Sewer: Public Sewer

Financial

• Source: California Regional MLS