Sales Office KBT Enterprises has purchased a 21,615-square-foot building at 6620 Cypresswood Drive. Michelle Soderberg and Todd N. Edmonds of Colliers International represented the seller, AJA Holdings. Isla Verde has purchased a 2,538-square-foot medical office building at 21376 Provincial in Katy from Robert Friedman. Keith Pollack of Re/Max Westside represented the seller. Richard P.