Active

$1,550,000

4921 21A Street SWAltadore, Calgary, AB T2T 5C2

  • 6 beds
  • 5 baths
  • 2,647 sq ft
  • Semi Detached (Half Duplex)

Listing courtesy of RE/MAX House of Real Estate · MLS® A2343646

About this home

NOW UNDER CONSTRUCTION, don't miss the chance for custom selections! This exceptional 3 STOREY LUXURY DUPLEX offers a rare opportunity to own a thoughtfully designed inner city home with impressive square footage, elevated functionality, and incredible flexibility in the heart of ALTADORE. Offering OVER 2,600 SQ FT ABOVE GRADE, a THIRD FLOOR RETREAT with DUAL BALCONIES, TWO PRIMARY BEDROOMS, multiple outdoor spaces, and FINISHED BASEMENT (with option to upgrade basement layout), this home is designed for modern family living, entertaining, and multi-generational flexibility. The main floor features a bright OPEN CONCEPT layout connecting the kitchen, dining, and living areas, creating an effortless flow for everyday living and entertaining. The kitchen sits at the heart of the home, while the spacious rear living area opens through large patio doors to the deck and backyard. A convenient POCKET OFFICE is thoughtfully planned to complete the main level. Upstairs, the second floor offers a spacious PRIMARY RETREAT with a PRIVATE ENSUITE and WALK-IN CLOSET. An additional 2 bedrooms, full bathroom, dedicated LAUNDRY complete this level. The THIRD FLOOR is a true standout, offering approximately 683 SQ FT of additional above-grade living space and incredible lifestyle flexibility. Designed for function a SECOND PRIMARY BEDROOM can become a retreat, entertainment lounge, executive workspace, or private getaway. BONUS/REC AREA provides a flexible space for family, guests, a second home office, or additional lounge. Large BI-PARTING DOORS open onto a FRONT AND REAR private DURADECK BALCONY, creating a seamless connection between indoor and outdoor living. The lower level features approximately 935 SQ FT, a SIDE ENTRANCE with two different floor plans you may choose from, providing versatility for usage. A DOUBLE DETACHED GARAGE, private yard, rear deck, and multiple outdoor spaces complete this property. Located in ALTADORE, one of Calgary's most desirable inner city communities, enjoy an established neighbourhood setting with convenient access to parks, pathways, schools, local shops, restaurants, Marda Loop, downtown, and major routes throughout the city. With OVER 3,500 SQ FT OF DEVELOPED LIVING SPACE including the basement , three above-grade levels, a THIRD FLOOR RETREAT, FLEXIBLE BASEMENT LAYOUT, and DOUBLE DETACHED GARAGE, this is a rare opportunity to own a distinctive luxury home in one of Calgary's premier communities. Call today to discuss presale options, including custom basement changes. Please note potential to suite is subject to approval and permitting by the city/municipality.

Key facts

Type
Semi Detached (Half Duplex)
Style
3 (or more) Storey, Attached-Side by Side
Year built
2026
Living area
2,647 sq ft
Lot
3,000 sq ft
Bedrooms
6 (4 above grade, 2 below)
Bathrooms
4 full, 1 half
Basement
Full, Finished
Parking
2-car garage
Price per sq ft
$586
Days on market
38
Listed
September 14, 2026
Community
Altadore
Municipality
Calgary

Features

Interior

Features
Built-in Features, Closet Organizers, High Ceilings, Kitchen Island, Natural Woodwork, No Animal Home, No Smoking Home, Open Floorplan, Pantry, Quartz Counters, Recessed Lighting, Separate Entrance, Storage, Sump Pump(s), Walk-In Closet(s), Wired for Data, Wired for Sound
Appliances
Garage Control(s), Oven-Built-In, Range, Range Hood, Refrigerator, Washer/Dryer
Flooring
Hardwood, Tile, Vinyl Plank
Heating
Forced Air, Natural Gas
Cooling
Rough-In
Fireplaces
1 (Gas)
Laundry
In Basement
Basement features
Separate/Exterior Entry
Included
Appliances

Suite

Suite
No

Building

Structure
Duplex
Levels
Three Or More
Shared walls
1 Common Wall
Construction
Brick, Stucco
Roof
Flat Torch Membrane, Asphalt Shingle
Foundation
Poured Concrete
New construction
Yes

Exterior & lot

Exterior
Balcony, BBQ gas line, Lighting, Private Yard
Lot
Back Lane, Back Yard, Front Yard, Interior Lot, Landscaped, Lawn, Low Maintenance Landscape, Private, Subdivided
Patio / porch
Deck, Front Porch
Fencing
Fenced
Front faces
W
Lot size
3,000 sq ft
Zoning
RCG

Parking

Garage spaces
2
Total parking
2
Details
Double Garage Detached

Condo / HOA

Restrictions
None Known
Ownership
Not a Condo

Land & rural

Title
Fee Simple

Community

Features
Fishing, Park, Playground, Schools Nearby, Shopping Nearby, Sidewalks, Street Lights, Tennis Court(s), Walking/Bike Paths

Rooms

RoomLevelSize
Living RoomMain15'0" x 14'4"
KitchenMain18'2" x 16'1"
Dining RoomMain11'0" x 10'6"
OfficeMain6'11" x 6'8"
Mud RoomMain6'6" x 4'11"
2pc BathroomMain0'0" x 0'0"
Bedroom - PrimarySecond13'6" x 12'10"
BedroomSecond11'6" x 10'0"
BedroomSecond11'6" x 10'0"
LaundrySecond10'0" x 5'6"
4pc BathroomSecond0'0" x 0'0"
5pc Ensuite bathSecond0'0" x 0'0"
Bedroom - PrimaryThird13'4" x 12'6"
Walk-In ClosetThird11'5" x 6'4"
Bonus RoomThird20'1" x 12'3"
3pc Ensuite bathThird0'0" x 0'0"
BedroomBasement10'1" x 10'0"
BedroomBasement12'10" x 10'1"
KitchenBasement11'1" x 8'0"
Living RoomBasement12'10" x 10'5"
LaundryBasement6'1" x 4'0"
4pc BathroomBasement0'0" x 0'0"

Location

Open in Google Maps ↗

Monthly cost estimate

Estimated monthly payment$7,276
  • Mortgage $7,276

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 $310,000.

Similar homes in Altadore

Active
$1,749,900

4110 18 Street SW
Altadore, Calgary, AB T2T 4V7

  • 4 bd
  • 4 ba
  • 2,351 sq ft
  • Detached
Call
Listing courtesy of: Century 21 Bravo RealtyMLS® A2335816
ActiveNew
$1,299,000

4310 16A Street SW
Altadore, Calgary, AB T2T 4L5

  • 3 bd
  • 3 ba
  • 1,515 sq ft
  • Detached
Call
Listing courtesy of: Century 21 Bamber Realty LTD.MLS® A2353339
ActivePrice reduced
$1,249,000

1904 50 Avenue SW
Altadore, Calgary, AB T2T 2W2

  • 5 bd
  • 4 ba
  • 2,870 sq ft
  • Semi Detached (Half Duplex)
Call
Listing courtesy of: RE/MAX Realty ProfessionalsMLS® A2350003
Active
$1,299,900

3817 18 Street SW
Altadore, Calgary, AB T2T 4V2

  • 4 bd
  • 4 ba
  • 2,854 sq ft
  • Detached
Call
Listing courtesy of: RE/MAX FirstMLS® A2348172
Active
$1,829,000

2029 35 Avenue
Altadore, Calgary, AB T2T 2E2

  • 3 bd
  • 3 ba
  • 2,443 sq ft
  • Detached
Call
Listing courtesy of: RE/MAX FirstMLS® A2347922
ActivePrice reduced
$1,375,000

1906 43 Avenue SW
Altadore, Calgary, AB T2T2M9

  • 4 bd
  • 4 ba
  • 2,016 sq ft
  • Detached
Call
Listing courtesy of: CIR RealtyMLS® A2348866
See all homes in Altadore

Listing data disclaimer

Data is supplied by Pillar 9™ MLS® System. Pillar 9™ is the owner of the copyright in its MLS® System.

Listing(s) information is provided for consumer's personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Data is deemed reliable but is not guaranteed accurate by Pillar 9™

The trademarks MLS®, Multiple Listing Service® and the associated logos are owned by The Canadian Real Estate Association (CREA) and identify the quality of services provided by real estate professionals who are members of CREA. The trademarks REALTOR®, REALTORS®, and the REALTOR® logo are controlled by CREA and identify real estate professionals who are members of CREA.

Listings displayed on this site may be held by brokerages other than Standard Realty Co. Each listing identifies its listing brokerage.

Listing last updated: Oct 17, 2026, 10:15 p.m.