In the interwar period, the ruling authorities considered culture as a matter of marginal concern. Delivered to the free market, it was not managed in a consistent way. A particular example of a grassroots cultural policy was the Warsaw Housing Cooperative. Built on socialistic foundations, it used culture as a way to consolidate its residents’ community and to develop the latter. The aim of this article is to show this original social phenomenon. By picturing its ideological foundations and the Cooperative’s institutional architecture, specific shapes of cultural activities can be shown, with special regard to its theatrical creation which was more innovative and original than other artistic events of then-Warsaw.