We share a joint bathroom
Firstly, the minimum area for the restroom regulated by paragraph 2.7. SNiP 2.08.01-89, should not be less than 0.8 meters of square. Secondly, such a redevelopment must be legalized. If the area and layout of the apartment allows you to divide the combined bathroom, then the work plan is as follows: 1. Dismantle plumbing equipment, remove lining. 2. Cut in the wall the doorway for entering the restroom. 3. Make a wiring of communications, focusing on accurate measurements. 4. Build a wall, connect a bathtub, a toilet, make the walls and floor, provide lighting, install the front door.