428 21 Avenue NE

Winston Heights/Mountview · Calgary · House · MLS® A2329849

5 bed5 bath2,385 sq ftbuilt 20174,661 sq ft lot

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About this property

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 a n 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.

Above grade: 2,385 sq ftas filed on the MLS® record

The $/sq ft on this page uses the above-grade figure only, because that is what the sold record it is compared against uses. Developed area includes the basement and is not comparable to it.

Market context

At $671/sq ft. Detached infill built since 2020 in Winston Heights/Mountview: the middle half of the 7 sales in the last 24 months of the Pillar 9 record closed between $512 and $551/sq ft — too few to call a median, enough to place this one.

A cohort median is not a valuation of this home. It says where the asking price sits against comparable sales — it does not price the lot, the finish level or the stage of construction.

Loads from the listing brokerage's tour provider

The full record

MLS® number: A2329849
Property type: House
Building type: House
Ownership: Freehold
Bedrooms: 5 (3 up, 2 down)
Bathrooms: 5 (4 full, 1 half)
Floor area: 2,385 sq ft
$ per sq ft: $671
Year built: 2017
Storeys: 2
Lot area: 4,661 sq ft
Frontage: 37.5 ft
Depth: 125.3 ft
$ per sq ft of lot: $343
Zoning: R-C2
Basement: Full (Finished)
Basement features: Separate entrance, Suite
Foundation: Poured Concrete
Construction: Wood frame
Exterior finish: Stucco
Heating: Forced air
Cooling: Central air conditioning
Fireplaces: 3
Flooring: Carpeted, Ceramic Tile, Hardwood
Parking: Detached Garage · 3 spaces
Appliances: Refrigerator, Gas stove(s), Dishwasher, Stove, Microwave, Window Coverings, Garage door opener, Washer/Dryer Stack-Up
Features: Back lane, No Smoking Home
Land features: Landscaped
Fencing: Fence
Outbuildings: Deck
Nearby: Golf Course, Park, Playground, Schools, Shopping
Community: Golf Course Development
Legal plan: 419R
Listed on: 2026-07-17
Days on market: 91

Room by room

Lower level
Kitchen	12.8 × 9.4 ft
Living room	12.8 × 11.4 ft
Bedroom	13.0 × 11.8 ft
Exercise room	9.0 × 10.0 ft
4pc Bathroom
Main level
Kitchen	14.2 × 11.5 ft
Dining room	11.1 × 14.9 ft
Living room	16.6 × 16.6 ft
Den	13.3 × 9.2 ft
2pc Bathroom
Upper Level
Primary Bedroom	12.0 × 23.0 ft
Bedroom	11.8 × 10.2 ft
Bedroom	13.0 × 11.8 ft
4pc Bathroom
5pc Bathroom	15.2 × 11.1 ft
Unknown
Kitchen	7.8 × 11.6 ft
Living room	11.4 × 16.6 ft
Bedroom	13.5 × 11.6 ft
4pc Bathroom

Listing courtesy of Sotheby's International Realty Canada · Mark A. Lockhart. Data from the CREA Data Distribution Facility (DDF®), refreshed 2026-10-16 09:37, deemed reliable but not guaranteed. View on REALTOR.ca

Ask Karen about this one

Karen Mangat

RE/MAX House of Real Estate
4034 16 Street SW, Calgary, AB T2T 4H4

403-805-0482 · Email Karen

Rough monthly payment

—per month, principal & interest

Fixed-rate math with semi-annual compounding, the Canadian standard. 4.49% is a starting figure, not a quoted rate — enter the one your lender gives you. Under 20% down, mortgage insurance applies and is not included. Not a quote, not advice.