The average cost of a small storage unit is $40 to $50 a month, while the larger sizes are an average of $200 or more a month. Multiple factors are considered for the price, including the location, security services and amenities offered.
A moderately sized storage unit of 10x15 is usually around $75 to $140 a month, though if it is climate-controlled, it can be as much as $150 a month. Climate control is one of many amenities that cause a storage unit to cost more. Some others include having on-site security, video surveillance cameras and a high-security gate for the entrance and exit. Keep in mind there may be other costs involved, such as a security deposit or purchasing a lock for the unit.