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    5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215

    5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215

    Begin your search of all Calgary duplexes for sale below! Duplex homes in Calgary are found in nearly every corner and community from the brim of the northwest all the way to the edge of the southeast. Known for their comparably lower price versus other types of properties, duplex “attached homes” are an excellent choice for first-time home buyers and those who have affordability at the front and centre for their real estate goals. Contact your team of experienced REALTORS® direct at 403-370-4008 if you have questions about any listings below or want to set up a private showing, and we will be happy to assist you!

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    5011 21 Street SW
    Altadore Calgary T2T 5B9

    $1,499,900
    Residential beds: 6 baths: 5.0 2,719 sq. ft. built: 2026

    Main Photo: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 1: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 2: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 3: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 4: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 5: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 6: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 7: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 8: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 9: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 10: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Photo 11: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
    Status:
    Active
    Prop. Type:
    Residential
    MLS® Num:
    A2277215
    Bedrooms:
    6
    Bathrooms:
    5
    Year Built:
    2026
    Architectural presence meets thoughtful design in this striking, modern SEMI-DETACHED home found in the desirable ALTADORE. The location comes with everyday amenities, schools, and parks close by, with quick access to major routes for easy commuting. From the moment you arrive, the bold exterior sets the tone for a home that blends elevated style with real-world livability. Walk into the front foyer offering a clean, welcoming entry with BUILT-IN BENCH seating and CLOSET AREA, flowing seamlessly into the main floor. The bright DINING AREA is found alongside the foyer with plenty of space and natural light. You will find a tucked-away POCKET OFFICE next to the front of the home, perfect for focused work and quiet time. The heart of the space unfolds into a lovely, open kitchen anchored by an oversized ISLAND, plenty of cabinetry, and integrated appliances. Whether you’re hosting or just moving through your day, the layout feels intuitive and easy. The LIVING ROOM is warm and grounded, centered around a GAS FIREPLACE with BUILT-INS and framed by large windows and patio doors that lead directly to the backyard DECK. The entire main floor feels cohesive and connected. A practical MUDROOM and stylish POWDER ROOM complete the level, adding everyday function without sacrificing design. Upstairs, the second floor is dedicated to comfortable family living. Three bedrooms, a full bathroom, and a centrally located LAUNDRY ROOM keep everything close at hand. The primary suite on this level feels calm and refined, with a WALK-IN CLOSET and spa-inspired ENSUITE featuring DOUBLE SINKS, a SOAKER TUB, and a large WALK-IN SHOWER. The third floor takes things up a notch. A spacious BONUS AREA with a WET BAR opens onto a PRIVATE BALCONY, creating an ideal space for entertaining, relaxing, or movie nights. This level also includes a private primary bedroom with its own ENSUITE, WALK-IN CLOSET, and BALCONY offering flexibility for owners or guests. Downstairs, the fully developed basement includes a self-contained SUITE layout with two bedrooms, a full kitchen, living area, bathroom, and dedicated laundry. It’s ideal for extended family, guests, or future rental potential. The location of this home ties it all together. Outdoor lovers will appreciate how close the community is to RIVER PARK and the ELBOW RIVER pathway system. These trails connect to Calgary’s broader network of pathways that stretch across the city. This community offers access to quality educational options within easy reach, including ALTADORE ELEMENTARY SCHOOL, MOUNT ROYAL UNIVERSITY, as well as other schooling choices in surrounding communities. Altadore is nearby the MARDA LOOP area, one of Calgary’s most vibrant and desirable inner-city hubs. It’s a setting that balances quiet residential living with city convenience, making this home as practical as it is impressive. This is the kind of home that make daily life feel organized and elevated. A house you’ll be proud to call your own.
    Property Type:
    Residential
    Property Sub Type:
    Semi Detached (Half Duplex)
    Condo Type:
    Not a Condo
    Transaction Type:
    For Sale
    Possession:
    Possession Date:
    Suite:
    Yes
    Num Legal Suites:
    1
    Num Illegal Suites:
    0
    Home Style:
    3 (or more) Storey, Attached-Side by Side
    Total Living Area:
    2,719.16 sq. ft.
    Main Level Finished Area:
    945 sq. ft.
    Upper Level Finished Area:
    1,774.16 sq. ft.
    Lower Level Finished Area:
    Above Grade Finished Area:
    Below Grade Finished Area:
    786.25 sq. ft.
    Taxes:
    Tax Assessed Value:
    HOA Fee Includes:
    Lot Area:
    3,003 sq. ft.
    Lot Frontage:
    7'7½"
    Acres Cleared:
    Acres Cultivated:
    Acres Irrigated:
    Acres Leasehold:
    Acres Not Cultivated:
    Acres Freehold:
    Acres Seeded:
    Acres Tame Hay:
    Acres Treed:
    Acres Waste:
    Acres Water Rights:
    Front Exposure:
    East
    Reg. Size:
    Reg. Size Includes:
    Unit Exposure:
    East
    Entry Level:
    1
    Levels:
    Three Or More
    End Unit:
    1 Common Wall
    Total Rooms Above Grade:
    8
    Year built:
    2026 (Age: 0)
    Bedrooms:
    6 (Above Grd: 4)
    Bedrooms Above Grade:
    4
    Bedrooms Below Grade:
    2
    Bathrooms:
    5.0 (Full:4, Half:1)
    Plan:
    1952AD
    Heating:
    Forced Air
    Basement:
    Full, Finished, None
    Foundation:
    Poured Concrete
    Builder:
    A1 Custom Homes
    New Constr.:
    Yes
    Construction Material:
    Composite Siding
    Structure Type:
    Duplex
    Roof:
    Asphalt Shingle
    Ensuite:
    Yes
    Flooring:
    Carpet, Ceramic Tile, Hardwood, Vinyl Plank
    Cooling:
    Rough-In
    Fireplaces:
    1
    Fireplace Details:
    Gas, Living Room
    Garage:
    Yes
    Garage Spaces:
    2
    Parking:
    Double Garage Detached
    Parking Places:
    2
    Parking Total/Covered:
    2 / -
    Laundry Features:
    Lower Level, Upper Level
    Altadore
    Bar Fridge, Built-In Oven, Dishwasher, Garage Control(s), Gas Cooktop, Microwave, Range Hood, Refrigerator, Washer/Dryer
    Garage Door Remote (2)
    None Known
    Floor
    Type
    Size
    Other
    Main Floor
    Living Room
    14'10" × 13'
    Main Floor
    Kitchen
    17'2" × 16'
    Main Floor
    Pantry
    8'7" × 4'9"
    Main Floor
    Dining Room
    11' × 10'
    Main Floor
    Mud Room
    7' × 5'3"
    2nd Floor
    Bedroom
    12'10" × 12'
    2nd Floor
    Bedroom
    11'7" × 10'5"
    2nd Floor
    Bedroom
    10'6" × 10'
    2nd Floor
    Laundry
    9'2" × 5'6"
    3rd Floor
    Bedroom - Primary
    15'9" × 12'1"
    3rd Floor
    Walk-In Closet
    8'10" × 6'1"
    3rd Floor
    Walk-In Closet
    11'4" × 6'1"
    3rd Floor
    Bonus Room
    13'8" × 8'10"
    Basement
    Bedroom
    12'11" × 10'
    Basement
    Bedroom
    11'2" × 10'
    Basement
    Game Room
    15'6" × 11'
    Basement
    Kitchen
    9'6" × 8'5"
    Basement
    Laundry
    6' × 5'7"
    Floor
    Ensuite
    Pieces
    Other
    Main Floor
    No
    2
    2nd Floor
    Yes
    5
    2nd Floor
    No
    4
    3rd Floor
    Yes
    5
    Basement
    No
    4
    Title to Land:
    Fee Simple
    Community Features:
    Park, Playground, Schools Nearby, Shopping Nearby, Sidewalks, Street Lights, Walking/Bike Paths
    Interior Features:
    Bar, Bookcases, Built-in Features, Closet Organizers, Double Vanity, High Ceilings, Kitchen Island, Open Floorplan, Quartz Counters, Recessed Lighting, Separate Entrance, Soaking Tub, Storage, Vaulted Ceiling(s), Walk-In Closet(s), Wet Bar
    Exterior Features:
    Private Entrance, Private Yard
    Patio And Porch Features:
    Deck
    Lot Features:
    Back Lane, Back Yard, City Lot, Front Yard, Low Maintenance Landscape, Rectangular Lot, Street Lighting
    Num. of Parcels:
    0
    Fencing:
    Fenced
    Region:
    Calgary
    Zone:
    CAL Zone CC
    Zoning:
    R-CG
    Listed Date:
    Jan 05, 2026
    Days on Mkt:
    • Photo 1: 5011 21 Street SW in Calgary: Altadore Semi Detached (Half Duplex) for sale : MLS®# A2277215
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      Photo 11 of 11
    Listed by RE/MAX House of Real Estate
    Data was last updated January 7, 2026 at 10:05 PM (UTC)
    Area Statistics
    Listings on market:
    17
    Avg list price:
    $1,050,000
    Min list price:
    $295,000
    Max list price:
    $1,999,500
    Avg days on market:
    47
    Min days on market:
    2
    Max days on market:
    322
    Avg price per sq.ft.:
    $564.46
    These statistics are generated based on the current listing's property type and located in Altadore. Average values are derived using median calculations. This data is not produced by the MLS® system.
    CODY BATTERSHILL
    powered by myRealPage.com

    Duplexes for Sale in NW, SW, SE, NE Calgary

    Calgary’s quadrants are home to a full spectrum of real estate including many duplex homes. Newer communities like Evanston, Silverado, Cornerstone and Mahogany have many new builds, while older inner city areas like Windsor Park, Bridgeland, Capitol Hill and Erlton are also home to their fair share of these types of properties, albeit most are attached style infills and more expensive than similar properties found on the outskirts of the city.

    If you’re looking for duplexes for sale in southwest, southeast, northwest or northeast Calgary specifically, our map search tool is an effective way to narrow down your options.

    Benefits of Duplex Homesinner city duplex for sale calgary

    What are some of the advantages of living in a duplex home in Calgary? In today’s dynamic market, affordability is at the top of many buyers’ minds – especially first-time buyers looking to get their foot into the door of homeownership.

    But apart from affordability, there are a handful of other reasons why a duplex might be right for you. Those include:

    #1Lessening the barrier to homeownership – as mentioned above, these homes are more affordable compared to their detached counterparts.

    #2Potential for passive income – many investors buy full duplex properties and live on one side then rent out the other. It’s an excellent way to supplement your mortgage and overall finances.

    #3Save money – the potential for secondary income when owning a full duplex in Calgary means you’ll be able to pay off your mortgage faster and pay less interest on your principal amount owing over the long term.

    #4 – Potential for future rental property – Duplex homes are an excellent option to consider if you’re looking for a rental property. Given their affordability versus detached lots, they typically are in high demand on the rental market and can make you considerable earnings as an investor.

    #5 – Added security – Compared to detached homes, your residence’s security is enhanced by the close proximity you have with your neighbour. Have added peace of mind when living in a duplex in Calgary because of this reason.

    Learn more about the benefits of owning a half or full duplex in Calgary today.

    Who Lives in Duplexes?Calgary duplex home for sale

    Affordability is a major concern for many homebuyers in today’s dynamic market. As a result, duplexes for sale in Calgary are often highly sought after by a wide range of buyers due to their typical lower price point – especially in suburban areas of the city.

    Here are a few different types of buyers who are usually very interested in duplex living:

    • First-time buyers -> those who are looking to step away from renting and into homeownership often consider duplex properties as an option. There are many benefits of living in an attached-style home versus a condo or townhouse, and they are more affordable than their single-family detached counterparts.

    • Empty-nesters -> those who are ageing and want to downsize often look to duplex bungalows as an option. Some communities in Calgary such as The Hamptons and Signal Hill, for example, have exclusive duplex bungalow properties available for ageing empty nesters who don’t want as many stairs inside their homes for mobility reasons.

    • Investors -> As mentioned above, many investors choose to buy entire duplex homes for sale in Calgary because they can live on one side and rent out the other. This way, they have more financial freedom and can choose to use the secondary income generated by the property any way they please.

    Truth be told, anyone can live in an attached-style home. It all depends on what their wants, needs and lifestyle include. Many luxury home buyers also love attached infill homes, a form of duplex found across the inner city areas of Calgary. Also see:

    Duplex Real Estate Agents in Calgary

    Calgary duplex real estate agents Cody Battershill Jordan Helwerda

    Are you thinking about buying a duplex for sale in Calgary? Maybe you’re planning on selling your current attached home sometime in the future? Our team of Realtors® in Calgary with RE/MAX House of Real Estate have years of experience in helping people buy and sell all types of properties and would love to put their knowledge and skillset to work for you!

    Contact Cody & Jordan anytime at 403-370-4008 if you have questions about current listings on the MLS® or would like us to set up a showing for you! Get a Free Property Evaluation for your Calgary duplex today!

    We are looking forward to helping you accomplish your real estate goals!

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