Modular building: Nowadays, many housing market activists know very well that construction is a costly and difficult process. To deal with this problem, a solution has been found to reduce the construction time, which is called modular building. or modular buildings are built off-site in such a way that building components or modules are made in a factory environment and transported to the desired location for assembly. Modular units include parts that are assembled together to create a prefabricated building or home. are connected. Depending on the size and style of the completed project, the number of required units is different. Modular buildings in small scales of 4 to 30 square meters and medium 31 to 60 square meters, the possibility of creating and diverse spaces in different uses and they are residential, administrative and commercial. So that it creates the possibility of creating various spaces such as work rooms, music practice rooms, sports rooms, etc. in residential buildings, these buildings can be placed in the corner of the yard or on the roof. . The materials of modular buildings can be used as the exterior covering of industrial style materials such as siding, firebrick, plastic wood, termwood, plum wood, natural wood, and PVC cement board plates. Materials such as PVC or kenaf are used.