Many Calgary homes built in the last few decades have a bonus room over the garage. It's often a big, bright space that ends up holding a treadmill and a pile of boxes. A few carpentry changes can turn it into the room everyone uses.
Fix comfort first
Rooms over garages are often colder in winter and warmer in summer than the rest of the house, because the floor sits above an unheated space and the room is often at the end of the duct run. Before spending on finishes, ask an HVAC contractor about airflow, and an insulation contractor about the floor over the garage. A room that's comfortable gets used. A beautiful room that's cold won't.
Idea 1: a media wall
A built-in media wall gives the room a focal point. It can hide cables, house the TV, store games and frame an electric fireplace. It also fixes the "big empty box" feeling better than any furniture layout. See fireplace built-ins and media walls.
Idea 2: a real home office
Built-in desks along a knee wall or under a window, with closed storage below and shelving above, make an office feel permanent. Add a door, or a glass partition, if the room is open to the stairs and you need quiet for calls.
Idea 3: a playroom that grows up
Window seats with lift-up or drawer storage, a wall of cubbies, and durable LVP flooring work for toddlers now. Swap the bins for books and games later, and the room becomes a teen hangout.
Idea 4: a guest room without a bedroom
A Murphy bed in a built-in surround, or a daybed nook, gives you guest space without giving up the room the rest of the year. If you want it to count as a bedroom, the window has to meet egress rules and you need a closet. Check before you plan.
Finishing touches that make it feel like a room
Wainscoting or board-and-batten on one wall, better baseboard and casing, and a coffered or beamed ceiling detail all make a plain drywall box feel finished. See is wainscoting worth it? and coffered vs. tray ceilings.
Frequently asked questions
Why is my bonus room so cold?
Common causes are a poorly insulated floor over the garage, air leaks and long duct runs from the furnace. An HVAC and insulation contractor can diagnose it. It's worth fixing before you finish the room.
Do I need a permit to finish a bonus room?
Cosmetic finishes like built-ins, trim and flooring generally don't need a building permit in Calgary. Moving walls, adding windows or adding wiring does. Check the City's home renovations page.
Sources
Rules, programs and prices change. Always confirm details with the source before you plan or budget.
