Proudly Serving the Community of Gardena Since 1976.. Storage Size Guide Proper packing and storing can allow many items to be stored in a relatively small place. Listed below is a quick rule-of-thumb reference to help determine the amount of space needed. Over 400 Ground Level Units of Various Sizes. Unit Sizes: 5 X 10 1 - bedroom home / apartment 10 X 10 - 1 - 2 bedroom home / apartment 12 X 10 - 2 bedroom home / apartment 10 X 15 - 2 - 3 bedroom home / apartment or small car 8 X 24 - 3 bedroom home / apartment or car 10 X 20 - 3 - 4 bedroom home / apartment or car 10 X 25 - 5 bedroom home or car or boat 10 X 30 - 2 - 3 bedroom home / apartment plus a car or boat 12 X 25 - 2 - 3 bedroom home / apartment plus a car or boat 10 X 35 - 3 - 4 bedroom home / apartment plus a car or boat FREE MOVE-IN TRUCK