The grouping of dwelling or tenancy occupants based on the presence or absence of one or more reported couple or parent-child relationships. Households can be single family, group or mixed composition households.

A single family household is a household consisting of a main tenant with or without a spouse and with or without children. A group household is a household consisting of two or more tenants who are aged 16 years and over and not in a reported couple or parent-child relationship. A mixed composition household is one which is neither a single family nor group household (they may contain multiple single family households).