Is a housing unit that has some but not all of the essential features of a conventional dwelling. It is a permanent structure or a part of a permanent structure, hence it may be a room or a suite of rooms in a permanent building but it is without some of the conventional dwelling facilities such as a kitchen, fixed bath or shower, piped water or toilet.In a number of countries or areas, a certain proportion of the housing inventory comprises such housing units which possess some but not all the characteristics of conventional dwellings.