Introducing the installation of a new sink and washing machine space during renovation work at an apartment in Soka City. Since there was no space for a vanity and washing machine inside the room, these will be installed during the full renovation. First, water supply and drainage work for the sink and washing machine space will be carried out under the floor as the floorboards are replaced. Once the floor work is complete, the vanity and laundry tub will be installed and the project is complete. In older apartments, the washing machine may be located outside, but if there is space, it is possible to install it inside.