What type of housing is characterized by 4 or 5 storey buildings typically made from sandstone?

The correct answer is tenements, as this term specifically refers to multi-storey residential buildings that often feature 4 or 5 levels, primarily constructed of sandstone or similar materials. Tenements were historically common in urban areas, particularly in Scotland, and are characterized by their unique architectural style and dense living conditions, reflecting the social housing needs of the time when they were built.

Flats, while similar, are a more general term that can describe any type of apartment dwelling without the architectural specificity of tenements. Bungalows are single-storey homes and do not fit the description of 4 or 5 storeys. Villas generally refer to larger, often luxurious homes, which can also be detached or semi-detached, and again, do not match the multi-storey characteristic of the housing described in the question.