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!
Bedrooms
5
Bathrooms
3
Square Feet
3,216
Lot Size
46,552 sqft
Year Built
1988
Property Type
Single Family Residence
Days on Market
6
HOA Fee
N/A
Garage Total
3
MLS #
CV26120174
Interior Features
Ceiling Fans
Flooring
Carpet, Laminate
Fireplace
Dining Room
Appliances
Dishwasher, Gas Range, Dryer, Washer
Main Level Bedrooms
1
Main Level Bathrooms
1
Cooling
Central Air
Heating
Central
Total Parking Spaces
3
Garage Spaces
3
Attached Garage
Yes
Parking Features
Driveway, Garage Faces Front
Fencing
Fair Condition
Security
Security Gate
Lot Features
Zero To One Unit Acre
Pool Features
In Ground, Private
Spa Features
Private
Sewer
Public Sewer
Water Source
Public
Curbs
$0
| Rating | School Name | ||
|---|---|---|---|
| No school data available for this area. | |||
Balanced market
Avg. time on market
This is a Balanced Market. Homes are selling at a moderate pace.
Flood Risk
Minimal — not in a FEMA flood zone
Wildfire Risk
Moderate — near wildland-urban interface
Heat Risk
Low — moderate summer temperatures
Earthquake Risk
Southern California seismic zone
Based on price, location, and features
Topfind Realty, DRE # 02240815, is a licensed real estate broker in California. Topfind Realty pledges to support the Fair Housing Act and adhere to Equal Housing Opportunity laws.
Copyright © 2026 Topfind Realty. All Rights Reserved.