For institutional development, height increases over the base district maximum of 18 feet up to a maximum of 35 feet in height for flagpoles, satellite dishes, safety railings, elevator shafts, stairwells, church spires, and belfries where consistent with all applicable Malibu Local Coastal Program policies and development standards. Roof-mounted mechanical equipment shall be integrated into the roof design, screened, and may project no more than two feet higher than the structure roof height (screens included).