Abstract: An offset hoisting apparatus comprises a rigid boom having a hook at a distal end thereof. The offset hoisting apparatus further includes a front mount having a front boom aperture and a rear mount having a rear boom aperture, each being adapted for confining the boom to slidably move therethrough. The invention has a slip collar having a slip collar boom aperture therein for receiving the boom therethrough and an offset hoisting apparatus attachment having a flexible linkage fixed at a distal end thereof with the slip collar. The boom is selectively slid between a retracted and an extended position and the load is secured to the hook. The crane apparatus then lifts and positions the load to a building.