The room standard is contravened when the number of persons sleeping in a dwelling and the number of rooms available as sleeping accommodation is such that two persons of opposite sexes who are not living together as a married couple or civil partners must sleep in the same room.
For this purpose—
children under the age of ten shall be left out of account, and
a room is available as sleeping accommodation if it is of a type normally used in the locality either as a bedroom or as a living room.