A storage system is provided with a first modular closet storage assembly packaged separately. The first modular closet storage assembly includes a pair of upright side supports to be supported upon an underlying support surface. A first plurality of horizontal cross members interconnects the pair of upright side supports. A second modular closet storage assembly is packaged separately. The second modular closet storage assembly includes only one upright side support to be supported upon the underlying support surface. A second plurality of horizontal cross members interconnects the only one upright side support to at least one of the pair of upright side supports of the first modular closet storage assembly.