---
listing_id: CRCV26120174
status: Active
price: 2200000
beds: 4
baths_full: 3
baths_half: 0
sqft_living: 3216
sqft_lot: 46552
lot_acres: 1.068
year_built: 1988
property_type: Residential
property_subtype: Single Family Residence
address: "21055 Stonybrook Dr"
city: Walnut
state: CA
zip: 91789
county: "Los Angeles County"
lat: 34.0379242
lng: -117.8444328
days_on_market: 2
hoa_fee: 
hoa_frequency: 
garage_spaces: 2
list_agent: "Guo Hui He"
list_office: "REALTY ONE GROUP WEST"
list_agent_phone: "–"
list_agent_license: 01931347
mls_source: CRMLS
modified: 2026-06-08
transaction_type: buy
---

Home | Los Angeles County | Walnut | 91789 | 21055 Stonybrook Dr

21055 Stonybrook Dr, Walnut, CA 91789

MLS: CRCV26120174 | Status: Active | Price: $2,200,000
Beds/Baths: 4 / 3
Property Type: Residential

Quick Facts

Beds Baths Sq Ft Acres Lot Yr Built
4 3 3,216 1.068 1988

Upcoming Open Houses

Date Time Hosted By
Saturday, June 20 1:00 pm - 4:00 am Guo Hui He
Sunday, June 21 2:00 pm - 5:00 pm Guo Hui He

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 4 spacious bedrooms, 3 bathrooms, and an enormous bonus 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 sc

MLS Listing Information

Field Value
MLS # CRCV26120174
MLS Source California Regional MLS
Days on Site 2

Features

Interior Features

Feature Details
Appliances Dishwasher, Oven Range - Gas, Dryer, Washer
Family Room Other
Fireplace Dining Room
Flooring Laminate
Cooling Ceiling Fan, Central Forced Air
Heating Central Forced Air

Exterior Features

Feature Details
Pool In Ground, Pool - Yes, Spa - Private

Parking, School, and Other Information

Feature Details
Garage/Parking Garage, Other, Garage: 2 Car(s)
Elementary District Walnut Valley Unified
High School District Walnut Valley Unified
HOA Fee $0

Contact Information

Guo Hui He
REALTY ONE GROUP WEST
License #: 01931347
Phone: –

School Ratings

School data provided by GreatSchools.org

Nearby Schools

School Type Grades Distance Rating
Leonard G. Westhoff Elementary School public K-5 0.93 mi 9
Collegewood Elementary School public K-5 0.95 mi 9
Suzanne Middle School public 6-8 0.99 mi 10
Walnut High School public 9-12 1.11 mi 10
International Polytechnic High School public 9-12 1.69 mi 10
Vejar Elementary School public K-5 1.74 mi 8
Armstrong Elementary School public K-6 1.94 mi 5
Ron Hockwalt Academies (Continuation) School public 9-12 2.17 mi N/A
Stanley G. Oswalt Academy public K-8 2.17 mi 8
Cyrus J. Morris Elementary School public K-5 2.19 mi 8
Kellogg Polytechnic Elementary School public K-6 2.48 mi 3
Lorbeer Middle School public 7-8 2.49 mi 5
Walnut Elementary School public K-5 2.54 mi 9
Golden Springs Elementary School public K-6 2.62 mi 7
Walnut Valley Adult public UG 2.68 mi N/A
South Hills High School public 9-12 2.75 mi 8
Hollingworth Elementary School public K-6 2.89 mi 8
Mesa Elementary School public K-5 2.90 mi 8
Nogales High School public 9-12 3.06 mi 4
Maple Hill Elementary School public K-5 3.07 mi 10

Nearby Homes

Address Price Beds Baths Sq Ft Status
681 Castlehill Dr $1,868,000 4 4/1 2,858 Active
677 Castlehill Dr $1,880,000 4 4/1 2,900 Active
19668 Three Oaks Lane $2,580,000 4 4/1 4,571 Active
21911 E Snow Creek $1,980,000 6 5 2,936 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 June 08, 2026. For the most current information, please contact Guo Hui He.