Owners of a Commack shopping center are seeking approvals to expand a Marshalls and Costco, planning documents show. The shopping center would expand from 528,537 allowable square feet to 555,717 allowable square feet, representing a 5.1% increase, Smithtown planning department officials said. To read more about this possible expansion, click the link in bio. (Photo credit: Rick Kopstein) - #longisland #longislandny #liny #suffolkcountyny #commackny #commack #expansion #renovation #marshalls #costco #suffolkcounty #suffolk #commackshoppingcenter #smithtown #smithtownny