A question on the number of rooms/bedrooms in a private dwelling is common in household surveys. A question on the number of rooms is mandatory for the Census of Population and Dwellings.
The number of rooms/bedrooms variable provides a measure of the size of a private dwelling, and in conjunction with the number of usual occupants, provides an indication of crowding and space utilisation in private dwellings.
Number of rooms and number of bedrooms are both flat classifications. Excluding residual categories number of rooms has 20 categories whereas number of bedrooms has 14. The residual categories are defined in Glossary and references.