The thermal condition in lease houses in Merauke is very uncomfortable, one of the causes is that the existence of home furniture that are not well organized in many lease houses causes the circulation of space to be not smooth. With the condition of a narrow house with more and more needs, the need for furniture facilities is needed. If the selection and use of unwise furniture will affect the comfort of the building, the room will become full/crowded with the furniture. The purpose of this research is to design an innovative multi-functional furniture that has more than 4 functions in one piece of furniture. This study used an experimental method, the data analyzed included: the amount of each lease house, the amount of each room in the lease house, the amount of furniture and the amount of furniture, and this study focused on the bedroom. Innovative furniture designed to have more than 4 functions (multifunctional). Innovative furniture that is multifunctional in the bedroom can combine several types of furniture such as the bed, wardrobe, study desk, book cabinet, chair, and other functions. The space circulation becomes 45% for a spacious bedroom of 9 m2. Therefore, the circulation of space becomes better and the need for circulation based on the comfort of the physical movements of the occupants is fulfilled. In addition to better space circulation, thermal conditions (temperature, humidity, and air circulation) also get better.