In the early Byzantine period, a wall was built around Peter’s House, turning it into a sacred enclosure or insula. Two pilasters were found in the excavations, one was attached to the middle of the north wall of the venerated room, and the other on the opposite south wall. These supported a stone arch for a new and higher ceiling. The walls the house-church were covered with coloured fresco patterns. A sacristy was added to the north of the venerated room and an atrium to the east.