Construction of the building, then known as One Seaport Residences, began in July 2015. Jack Resnick & Sons, which owned the similarly named One Seaport Plaza at 199 Water Street, sued Fortis for trademark infringement that September. The two firms came to an agreement in December 2015, when Fortis agreed to market the building using the numeral version of the name, 1 Seaport, for a limited period. After that period had ended, Fortis could not market the building as either "One Seaport" or "1 Seaport". Fortis submitted a condominium offering plan for the building to the New York Real Estate Finance Bureau, which approved the plan in late February 2016. Fortis estimated that it would be able to sell 80 condos for a total of $272 million.
