Households' behaviours in the market for goods and services are determined by many different factors, among other things, the phase of household's life cycle being treated as a synthetic measure of family's biological development, composition and number of members of the household and its members' age. Households' consumer needs are strongly diversified and related to qualitative transformations caused by family growth and a current state of the life cycle. An analysis of activity of the separated types of households, being at a different stage of biological development, as regards the most important groups of non-food goods and services has confirmed occurrence of the relationship between the behaviours observed in the market and the household's life cycle phase.