A 10x10 storage unit is the size of half of a standard one-car garage.
It fits the contents of an entire family room or two full bedrooms, including several small to medium-sized boxes.
A 10x15 storage unit is a little smaller than a standard one-car garage.
It fits the contents of three full bedrooms and larger items such as a piano, couches, tables, or large-screen TVs, plus several medium to large-sized boxes.
A 10x20 storage unit is the size of a standard one-car garage.
It fits the contents of a multi-bedroom house, including several oversized items like a couch, a refrigerator, a washer/dryer and a dining room set or several large boxes.
A 10x30 storage unit is a little larger than a one-car garage.
It fits the contents of a fully furnished 3 bedroom house, including oversized items such as a couch, mattress sets, a dresser, a refrigerator, a washer/dryer, a dining room set, an entertainment center and several large boxes.