A 5x5 self-storage unit is roughly the size of a standard walk-in closet (25 square feet). It is ideal for storing the contents of one small room, such as a studio apartment, dorm room, or seasonal gear.

A 5x10 self-storage unit (roughly the size of a walk-in closet) holds about one to two rooms of furniture. It is ideal for a mattress set, a sofa, a dining room set, several medium-sized boxes, and small seasonal items.

A 10x10 self-storage unit (100 sq. ft.) holds the contents of a 2- to 3-bedroom house or apartment. It is ideal for bulky furniture, major appliances, and about 30 to 40 medium moving boxes.

A 10x15 self-storage unit (150 square feet) holds the contents of a two-to-three-bedroom house. It is perfect for large furniture (mattresses, sofas, dining sets), major appliances, several dozen moving boxes, and bulky items like bicycles or kayaks.

A 10x20 self-storage unit is roughly the size of a standard one-car garage and holds the contents of a 3- to 5-bedroom house. It is ideal for bulky furniture, major appliances, numerous large boxes, mattresses, and items like motorcycles or canoes.

A 10x30 self-storage unit holds about 3,000 sq. ft. of space, roughly the equivalent of a fully furnished 5-to-7-bedroom house. It is ideal for the entire contents of a large home, multiple vehicles, or bulky commercial inventory.