There are seven residential units on three terraces at the lower end of the slope of the Bulbul Mountain. The oldest building dates back into the 1C BC and continued in use as residence until the 7C AD.
Ephesus terrace houses are covered with protective roofing which resembles Roman houses. The mosaics on the floor and the frescos have been consolidated and two houses have been opened to the public as a museum.
They had interior courtyards (peristyle) in the center, with the ceiling open. They were mostly two-storied, upper stores have collapsed during time. On the ground floor there were living and dining rooms opening to the hall, and upstairs there were bedrooms and guest rooms.
The heating system of the terrace houses were the same as that in baths. Clay pipes beneath the floors and behind the walls carried hot air through the houses. The houses also had cold and hot water. The rooms had no window, only illuminated with light coming from the open hall, so that most of the rooms were dim. The excavations of the terrace houses started in 1960. The restoration of the houses have been finished and can be visited today.