Question: what is the standard size of a single room?
Answer: The minimum size in floor space of a SINGLE bedroom is 7.0 square metres or 75.35 square feet and the room must have a minimum width of 2.15 metres or 7 feet 1 inch. A DOUBLE bedroom (or twin) needs to be 11 square metres or 118.41 square feet with a minimum width of 2.55 metres or 8 feet 5 inches.