Osiedle [ɔˈɕɛdlɛ] (Polish plural: osiedla) is a term used in Poland to denote a designated subdivision or neighbourhood of a city or its dzielnica, or of a town, with its own council and executive.Like the dzielnica and sołectwo, an osiedle is an auxiliary unit (jednostka pomocnicza) of a gmina.These units are created by decision of the gmina council, and do not have legal personality in their own right.In the case of an urban-rural gmina, it is also possible for a whole town to be designated an auxiliary unit.However the word osiedle is also frequently used to denote any housing estate or development.