The size of truck depends on the quantity and size of items in your home. Smaller moves like a studio or one-bedroom apartment will need a significantly smaller truck than a five-bedroom home. Your home’s bedrooms and square footage are two of the most common methods of calculating the size of the truck.  On average, homes or apartments with two or fewer bedrooms require a 15-foot-long truck. Larger two-bedroom or three-bedroom homes or apartments require 20-foot-long trucks. Homes or apartments with four bedrooms or larger square footage will need a 26-foot-long truck.