Abstract: A collapsible building and a method for constructing the same in situ. The building is comprised of a plurality of separate elements. The elements include a foundation, columns, roof trusses, and side and roof panels. The columns and roof trusses include elongated portions which serve as the juncture for the panels. The panels define the inner and outer surfaces of the roof and sides of the building.The method of constructing the building comprises the steps of setting the foundation, erecting the columns on the foundation, supporting the roof trusses on the columns, sliding roof and side panels into their positions, installing a ridge cap, and sealing the structure.