Active

$1,599,988

428 21 Avenue NEWinston Heights/Mountview, Calgary, AB T2E 1S6

  • 5 beds
  • 5 baths
  • 2,386 sq ft
  • Detached

Listing courtesy of Sotheby's International Realty Canada · MLS® A2329849

Virtual tour

About this home

Welcome to this stunning custom built masterpiece where exceptional craftsmanship, luxury finishes, and incredible versatility come together. Designed with both elegance and functionality in mind, this remarkable home offers quality throughout, featuring a spacious triple attached garage, a fully self contained legal carriage suite, and a beautifully finished illegal basement suite.

From the moment you step inside, you'll be impressed by the home's sophisticated design, abundant natural light, and meticulous attention to detail. The open-concept main floor showcases premium finishes, designer lighting, custom millwork, and a chef-inspired kitchen complete with high-end appliances, large island, custom cabinetry, and luxurious quartz countertops. The expansive living and dining spaces are designed for both effortless entertaining and comfortable everyday living. A beautiful fireplace framed by custom built-in cabinetry creates a striking focal point in the living room, while large sliding glass doors open to the backyard, seamlessly blending indoor and outdoor living. The mudroom, located just off the backyard, offers an incredible amount of storage, a built-in bench, and perhaps the best feature of all - a dedicated dog wash.

The primary retreat is a true sanctuary, featuring a spa inspired ensuite and generous walk-in closet, while the additional bedrooms are thoughtfully designed with comfort and style in mind. The upper level is complete with a large 4-piece bath and conveniently located laundry room. Every inch of this home reflects superior quality, from the premium flooring and custom built-ins to the carefully selected fixtures and finishes.

The professionally finished illegal basement suite offers another fully independent living space with its own kitchen, living area, 1-bedroom, a flex room, and private entrance ideal for investors or multi generational living. Adding tremendous value and versatility, the detached 1-bedroom, legal carriage suite provides an excellent opportunity to rent, extended family, guests, or a private home office.

Outside, enjoy outstanding curb appeal, professionally designed landscaping that includes hot tub, multiple deck and entertaining areas, including a gorgeous wood-burning stone fireplace, beautiful gardens and plenty of parking thanks to the oversized triple garage. This one of a kind property delivers the perfect combination of elegance, functionality with multiple suites.

A rare offering with uncompromising quality, premium finishes, and multiple self-contained living spaces, this extraordinary custom home truly stands apart.

Key facts

Type
Detached
Style
2 Storey
Year built
2017
Living area
2,386 sq ft
Lot
4,660 sq ft
Bedrooms
5 (3 above grade, 2 below)
Bathrooms
4 full, 1 half
Basement
Full, Finished
Parking
3-car garage
Price per sq ft
$671
Days on market
85
Listed
July 17, 2026
Community
Winston Heights/Mountview
Municipality
Calgary

Features

Interior

Features
Kitchen Island, No Smoking Home
Appliances
Central Air Conditioner, Dishwasher, Electric Stove, Garage Control(s), Gas Stove, Microwave, Refrigerator, Washer/Dryer, Washer/Dryer Stacked, Window Coverings
Flooring
Carpet, Ceramic Tile, Hardwood
Heating
Forced Air
Cooling
Central Air
Fireplaces
3 (Gas, Wood Burning)
Laundry
Multiple Locations
Basement features
Separate/Exterior Entry
Included
hot tub, stove in basement, fridge in basement, dishwasher in basement, fridge in carriage suite, dishwasher in carriage suite, washer and dryer in carriage suite, Control 4 system and speakers throughout the home.

Suite

Suite
Yes
Details
Above Detached Garage, Basement
Location
Suite Attached/Within Primary Dwelling, Suite Detached From Primary Dwelling
Legal suites
1

Building

Structure
House
Levels
Two
Construction
Stucco, Wood Frame
Roof
Asphalt Shingle
Foundation
Poured Concrete

Exterior & lot

Exterior
Balcony, Private Entrance, Private Yard
Lot
Back Lane, Back Yard, Landscaped
Patio / porch
Deck
Fencing
Fenced
Front faces
S
Lot size
4,660 sq ft
Zoning
R-C2

Parking

Garage spaces
3
Total parking
3
Details
Triple Garage Detached

Condo / HOA

Restrictions
None Known
Ownership
Not a Condo

Land & rural

Title
Fee Simple

Community

Features
Golf, Park, Playground, Schools Nearby, Shopping Nearby

Rooms

RoomLevelSize
KitchenMain14'3" x 11'6"
Dining RoomMain11'1" x 14'11"
Living RoomMain16'7" x 16'7"
DenMain13'4" x 9'2"
2pc BathroomMain—
Bedroom - PrimaryUpper12'0" x 23'0"
BedroomUpper11'9" x 10'3"
BedroomUpper13'0" x 11'9"
4pc BathroomUpper—
5pc Ensuite bathUpper15'3" x 11'1"
KitchenLower12'9" x 9'5"
Living RoomLower12'9" x 11'5"
BedroomLower13'0" x 11'9"
Exercise RoomLower9'0" x 10'0"
4pc BathroomLower—
KitchenSuite7'9" x 11'7"
Living RoomSuite11'5" x 16'7"
BedroomSuite13'6" x 11'7"
4pc BathroomSuite—

Location

Open in Google Maps ↗

Monthly cost estimate

Estimated monthly payment$7,501
  • Mortgage $7,501

An estimate, not a quote: excludes property tax, home insurance and utilities. Starting rates are the best advertised 5-year fixed rates on October 8, 2026 (nesto.ca, best 5-year fixed); your rate depends on your lender and situation. Minimum down payment under Canadian rules is $319,998.

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Listing last updated: Aug 17, 2026, 12:15 a.m.