**4.1 In a nutshell**

The growing dominance of housing market functions against their personal and social functions jeopardizes the social sustainability of housing. It neglects the justifiable needs of those persons, being unable to rent or purchase dwellings offered to private (and increasingly social) market conditions. Solidarity across social strata is threatened, and novel mechanisms of exclusion provoke intersectional fragmentation and marginalization, introducing room for encapsulation and resistance. Contemporary capitalistic housing functions are, furthermore, in sharp contrast to challenges of ecological sustainability (land and resources consumption, housing forms, housing locations). Economic sustainability is challenged by short-term profit-seeking versus long-term income security (rent revenue). Housing markets are socially and ecologically blind [36].
