Tat was deeply passionate about the development of St. Andrew Greek Orthodox Church in San Luis Obispo. He was involved in moving the Church to its current site and participated in its renovation. Tat had a vision of what St. Andrew Church could become. In honor of his memory, his family has created the Tat Constantinou Memorial Bell Tower Fund to complete a project he started long ago – among his original architectural plans for the Church, Tat designed an external facade and bell tower that remains to be built. Donations made will contribute to realizing these plans.