A construction system, method and apparatus for erecting buildings and the like is disclosed. The construction system comprises a plurality of lifting rams (20) operatively coupled to a power source and a controller operatively coupled to the power source to control the lifting rams. A plurality of elongate, telescopic lifting rails (28) extending beneath a construction element or part thereof, such as conventional roof members (18), are also provided. Each lifting rail is coupled to at least one lifting ram of the plurality of lifting rams to elevate the construction element to a prescribed height.