The rehabilitation and reconstruction program for Aceh and Nias after the earthquake and tsunami in Aceh in 2004 are included building relief houses, which in Gampong Bitai Banda Aceh as many as 235 housing units, type 45+ from the Turkey Red Cressent (TRC) in 2006. Currently (2022) ), most of the houses seemed to be getting bigger, with the result the neighborhood is getting denser. The purpose of the study was to determine the factors that influence the residents to change their houses. This research is important to understand the phenomenon in society, which could be as an anticipated in dealing with the slums in the future according to SDGs point 11. The research approach was using a combination of quantitative-qualitative research, on 40 sample units (17.02%), using the SPSS statistical method. The aspects were studied including: occupancy aspects (space changes): and occupant aspects (6 factors). The results showed that the priority hierarchy of residents have changed their houses, they are: lifestyle changes (92%), economic improvement (85%), self-identity (82%), using of new technology (82%), increasing the number of family members (82%), socio-cultural influence (77.5%). The conclusion of the study is that lifestyle is very important to the society, while socio-cultural factors are not really important comparing to it. Changes in lifestyle related to people's conditions are increasing the society after the tsunami, demanding the modern living facilities which require additional space in their dwellings. socio-cultural factors have little influence in this condition because generally some of the residents are immigrants.