Unit size
How unit size is described varies by province. In Quebec, listings count total rooms, with the half-room being the bathroom: a 3½ is a one-bedroom, a 4½ is a two-bedroom, a 5½ is a three-bedroom, and a 1½ is a studio. Elsewhere in Canada, listings count bedrooms directly — one-bedroom, two-bedroom, bachelor, studio. A Quebec 4½ and an Ontario two-bedroom describe essentially the same unit.
Included utilities
In Quebec, "all-inclusive" (tout inclus) usually means heat and hot water are in the rent, and "chauffé, éclairé" adds electricity. Elsewhere the equivalent is "utilities included," whose scope varies: sometimes heat only, sometimes electricity, water, and occasionally internet. These terms aren't standardized anywhere, so the listing detail is what matters. The gap between a heated and an unheated unit can be substantial in winter.
Furnished, semi-furnished, unfurnished
A semi-furnished unit typically includes the main appliances — refrigerator and stove — but no furniture. A furnished unit includes furniture. In Quebec, a listing with no mention is presumed unfurnished with no appliances, which differs from common practice in most other provinces, where a fridge and stove are generally supplied.
Rooms and shared housing
A room rental is a bedroom in a shared unit, usually with a common kitchen and bathroom. Rent is almost always all-inclusive. The lease may be signed directly with the landlord, or the room may be sublet by a roommate already in place. In Quebec, a roommate named on the lease has the same rights and obligations as any other tenant; a verbal arrangement between roommates does not carry the same protection.
Lease start dates
In Quebec, most residential leases begin July 1st, a convention tied to Moving Day. Inventory peaks between February and May, thins in June, then rebuilds in the fall. Elsewhere in Canada there's no single turnover date: leases generally start on the first of any month, with a peak in August and September in university cities.