Micro-apartments are the next move for big city living. Housing size restrictions are decreasing nationwide, so architects are drawing up creative plans to take 200-450 square feet and make it "liveable;" these tiny homes are most popular in several big U.S. cities where the need for affordable housing is critical, including New York City, Boston, San Francisco and even in this Providence, Rhode Island shopping mall.

As most of these apartments come furnished (beds, chairs, etc are all designed for the specific living area to save maximum space), new tenants will likely need a place to store their old couches, love seats and just about anything else they can't fit in the cabinets; a storage unit is the logical place for these renters to store belongings they won't want to pitch but can't possibly fit in their new place.