The structure (2) supports the collapsible roof (2), the frame (3) at the top stiffening the complete assembly. The house (1) is usable as a summerhouse, carport etc. The structure can consist of uprights (9.1-9.4) resting foundations (10) or the ground and joined together by the frame at the top, while a platform (8) can be mounted on them near the bottom, a mechanism being provided for levelling it. Where there are several platforms at one level adjusting mechanisms can be provided at their edges for the gaps formed between them.
