The increasing complexity of multi-cultural society has given rise to the thought that traditional (demographic and socio-economic) variables are no longer sufficient to substantiate policy development and planning in the housing sector. The concept of life-style is presumed to add to the description and prediction of the demand side, thus enabling housing strategies that are consistent with more dynamic and differentiated preferences. The usefulness of life-styles for policy development was studied in a literature review, in particular of research in the Netherlands. The study shows that the current significance of the concept is doubtful for various reasons: the indefiniteness of life-styles; the static and simplified view of society that is often presented, which is partly caused by the methods used; the uncertain relation to types of residential environment; and the unproven necessity of using life-styles alongside or as a substitute for more traditional variables. Recommendations are offered for future research on this subject.