A method of construction includes positioning at least one support member (2) in the ground, forming a foundation (4) substantially adjacent the at least one support member, excavating ground beneath the foundation to a prescribed depth below the surface (5) temporarily forming cavities or voids (8) and supporting bridges (10) beneath the foundations, excavating the supporting bridges and dropping the formed foundation to the prescribed depth. Structures such as walls (12) may be constructed on the foundations prior to dropping the foundations and bracing members (22) may be used to prevent deflection of the walls.