Although, there are some articles published about Islamic architecture however, few of them are particularly focusing on the functions of residential houses according Islam theory.This book was prepared due to understanding principle of Islam about housing. This book has been proposed in two main chapters. At chapter one was discussed about concepts and definition. Indeed it is literature review. In order to good organization book, chapter two was divided three parts. In part one was considered Quantity and quality principles In Islamic - Iranian house. Writer believed there are seventeen principles for achieving appropriate home. Also, in part two was studied Islamic principle of inside home. Author has discussed in detail such as kitchen, bathroom, rooms and guesthouse. At finally in part three was analyzed "Home location in neighborhood" that was studied its position according to climate factors such as sun and wind orientation. Based on mentioned information, author suggests four principles in order to achieving Islamic house.