21055 Stonybrook Drive, Walnut, CA 91789

Single-Family · For sale · $2,149,000 · MLS# CV26120174

Single-Family for sale in Southern California — $2,149,000. 5 beds · 3 baths · 3,216 sqft. Experience the privacy and tranquility of this exceptional gated estate nestled in the prestigious Snow Creek community of Walnut, served by the award-winning Walnut Valley Unified School District and highly acclaimed…

21055 Stonybrook Drive
For sale

$2,149,000

21055 Stonybrook Drive, Walnut, CA 91789

5beds
3baths
3,216sqft
Single-FamilyProperty type
1988Year built
1.07 acresLot size
3,216 sqftLiving area
$668/sqftPrice / sqft
HOA
3 spacesGarage

Facts & features

Interior

Bedrooms & bathrooms

  • Bedrooms: 5
  • Bathrooms: 3
  • Full bathrooms: 3

Heating

  • Heating: Central

Cooling

  • Cooling: Central Air

Appliances

  • Included: Dishwasher, Gas Range, Dryer, Washer

Interior area

  • Living area: 3,216 sqft

Property

Parking

  • Total parking spaces: 3
  • Garage spaces: 3

Lot

  • Lot size: 1.07 acres

Features

  • Pool features: In Ground, Private
  • View: Back Bay

Construction

Type & style

  • Home type: Single-Family
  • Property subtype: Single Family Residence

Condition

  • Year built: 1988

Community & HOA

Community

  • Has HOA: No

Financial & listing details

  • Days on market: 46 days
  • Price / sqft: $668
  • Status: Active
  • MLS#: CV26120174

Location

  • City: Walnut
  • ZIP: 91789

About this home

Experience the privacy and tranquility of this exceptional gated estate nestled in the prestigious Snow Creek community of Walnut, served by the award-winning Walnut Valley Unified School District and highly acclaimed Westhoff Elementary School. Thoughtfully updated throughout, this beautifully maintained residence features 5 spacious bedrooms, 3 bathrooms, and a versatile oversized bonus room that can easily serve as a fifth bedroom, media room, game room, home gym, or children's playroom. The beautifully remodeled kitchen and bathrooms provide true move-in-ready comfort while offering an ideal floor plan for both everyday living and entertaining. Tucked behind gates and accessed by a long private driveway, this home offers an extraordinary sense of privacy rarely found in Walnut. Set on an approximately 1.07-acre private hillside estate lot, the property is surrounded by mature trees, natural open space, and a peaceful setting that creates the feeling of your own private retreat. The resort-inspired backyard is designed for California indoor-outdoor living, featuring a sparkling pool and spa framed by mature landscaping and a serene hillside backdrop. Whether entertaining guests, spending time with family, or simply enjoying the quiet surroundings, this outdoor space offers a relaxing lifestyle with exceptional privacy. Located in one of Walnut's most sought-after neighborhoods, this home is just minutes from parks, shopping, dining, and convenient freeway access while offering the rare combination of privacy, beautifully updated interiors, resort-style amenities, and top-rated schools. Enjoy the rare luxury of exceptional privacy without sacrificing convenience, just minutes from top-rated schools, shopping, and dining. A truly exceptional opportunity to own a private estate in one of Walnut's most desirable communities.

Listing updated: July 18, 2026 at 4:48 PM

Listed by: Guo Hui He, REALTY ONE GROUP WEST

Source: CRMLS, MLS#: CV26120174, Originating MLS: California Regional MLS

Location

Explore parks, streets, and what's around this home.

Walnut

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Facts & features

Interior

Bedrooms & bathrooms

  • Bedrooms: 5
  • Bathrooms: 3
  • Full bathrooms: 3

Heating

  • Heating: Central

Cooling

  • Cooling: Central Air

Appliances

  • Included: Dishwasher, Gas Range, Dryer, Washer

Interior area

  • Living area: 3,216 sqft

Property

Parking

  • Total parking spaces: 3
  • Garage spaces: 3

Lot

  • Lot size: 1.07 acres

Features

  • Pool features: In Ground, Private
  • View: Back Bay

Construction

Type & style

  • Home type: Single-Family
  • Property subtype: Single Family Residence

Condition

  • Year built: 1988

Community & HOA

Community

  • Has HOA: No

Financial & listing details

  • Days on market: 46 days
  • Price / sqft: $668
  • Status: Active
  • MLS#: CV26120174

Location

  • City: Walnut
  • ZIP: 91789

Price history

DateEventPrice
7/05/2026Source: CRMLS, #CV26120174Price change$2,149,000$668/sqft-2.3%
6/06/2026Source: CRMLS, #CV26120174Listed for sale$2,200,000$684/sqft
California Regional Multiple Listing Service (CRMLS)

The multiple listing data appearing on this website, or contained in reports produced therefrom, is owned and copyrighted by California Regional Multiple Listing Service, Inc. ("CRMLS") and is protected by all applicable copyright laws. Information provided is for viewer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties the viewer may be interested in purchasing. All listing data, including but not limited to square footage and lot size is believed to be accurate, but the listing Agent, listing Broker and CRMLS and its affiliates do not warrant or guarantee such accuracy. The viewer should independently verify the listed data prior to making any decisions based on such information by personal inspection and/or contacting a real estate professional.

Based on information from California Regional Multiple Listing Service, Inc. as of 2026-07-18 16:48:54 PDT and /or other sources. 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