Nowadays, the emotional and human relationships are so weak that close neighbors are not aware of each other and even they do not know their names after living together for a long time; while, in the Quran, God values neighbors and how to behave with them and he advises us to do good to neighbors. In addition, according to religious leaders, if neighbors behave with each other well, that will be the source of abundant blessings and a good neighbor is known as a valuable blessing. There are some neighbors’ duties to each other, which according to Ahl al-Bayt’s sayings are considered as a sign of fairness, including watching out, greeting, helping, visiting, charity, need satisfaction, and sympathy. Living in apartments is one of today’s life forms that its deep effect on education, relationships, family conflicts, robbery, the ignorance of neighbors and relatives, and its other damages are paid less attention. This analyticaldescriptive research shows that there are the following negative consequences of living in apartments: increase of mental stresses, annoyance of neighbors, decrease of modesty, dominance of individual life, avoidance of socialization, loss of individual’s social identity, and incidence of physical and mental diseases because of inactivity caused by the lack of space. This research aims to investigate the ethics of how to behave with neighbors and how to live in apartments, and take advantage of Quranic teachings and Ahl al-Bayt’s sayings for reducing the damages of living in apartments, as a necessity, in order to reach the correct path of ethics.