About us Storage & Business Centre of Tega Cay Storage and Business Centre of Tega Cay is Fort Mill’s convenient choice for high-quality self storage units and office spaces.Our facility houses a mix of traditional and climate-controlled self storage units to let us best meet your storage unit needs in the Tega Cay/Fort Mill area.In addition to our self storage units and office space rentals, we also offer boat storage and RV parking just minutes from the Cay.