Polish apartment stock is very heterogeneous and differences can be observed in many dimensions. More than 67% of the existing stock is located in cities, mostly smaller ones though. There are no children in more than half of all households, and 25% of all of them are unipersonal. Usage of an apartment can be based on a multitude of legal titles from which the most popular is private ownership, which reaches almost 70% for the whole country. In bigger cities housing associations and renting is also popular. The quality of apartments varies based on the rights users have towards them. The aim of the paper is to measure the diversity of using information coming from the annual household survey conducted by GUS in 2012. An apartment’s quality was assessed in four dimensions: existence of necessary installations, technical condition, characteristics and subjective judgment of the users. Apartments with different legal titles are of statistically different quality and the privately held ones, located in buildings belonging to housing associations, are definitely the best. As for rented apartments which can be used without the necessity of paying rent offer a significantly lower standard.