Abstract: Systems and methods are provided for foundation lifting and retention using fluid drive actuators are described. A foundation lift system of embodiments may include expendable fluid drive actuators operable to provide lifting forces with respect to a foundation structure using a fluid pressure (e.g., hydraulic and/or pneumatic) drive mechanism and utilize one or more locking mechanisms and/or fluids operable to persistently lock the lift assemblies in an extended state to retain the foundation structure in its lifted position. Curable fluids injected into expendable fluid drive actuators of embodiments may be configured to solidify within the drive mechanism and impede movement of the lift assemblies subsequent to a foundation lifting operation. Additionally, one or more locking mechanisms may be configured to engagedly retain the expendable fluid drive actuator in an extended state subsequent to the foundation lifting operation.