More than in most cities — and attached versus detached is a bigger distinction here than buyers from milder climates expect.
Five months of winter, regular hail in summer, and a city where nearly every household drives. A garage in Calgary is not storage for a hobby car — it is where you keep the vehicle you use every day, out of the snow you would otherwise scrape and the hail that would otherwise dent it.
That is why a home without one narrows its buyer pool here in a way it might not in Vancouver or Toronto.
Attached is generally the stronger feature for resale, for one reason that dominates the rest: at minus thirty, you get into your car without going outside. Buyers who have lived through a Calgary winter value that far more than those who have not, which is worth remembering if you are relocating and inclined to dismiss it.
Detached garages are common and entirely normal in the established inner-city communities, usually alley-loaded at the back of the lot. They are not a defect — in those communities they are the expected form and the market prices them accordingly. They do come with a walk across a snowy yard, and a separate roof to maintain.
Where an attached garage is standard in a community and a home has a detached one or none, that home is the outlier, and outliers negotiate.
Converting a garage to living space is one of the few renovations we would actively warn against in this city. It buys square footage and costs you a larger group of future buyers than most people expect.