In dealing with the interior design of this project, at first we were faced with a typical building in mass building systems, and according to our personal needs, our audience needed different spaces compared to the current state of the project, and we divided the space according to the needs of the audience. We have changed and created a suitable accessory for each space in line with the needs. These changes were made in the sector of semi-private and private arenas. In the entrance area, in order to define the entrance space and create a spatial filter, a false wall was placed between the living area and the entrance door, and by thickening the wall, two functions were added to it on the sides; One is the TV wall and the other is the shoe and clothes closet in the entrancearea. To define the kitchen space, the vertical surface was used to define the space with the help of cabinets and the island, but the kitchen area was defined on the floor level with communication spaces (corridors) so that the semi-private spaces are connected in a puzzle-like manner. As the communication of semi-private spaces happened on the floor, this happened in private spaces too with the help of matching materials that canbevisuallyunderstood. Regarding the private spaces, by changing the shape of the doors and assigning two rooms to two different functions, one as a bedroom and the other as a work room, an attempt has been made to improve the performance based on the needs of the audience.