The Cape Bowling Green lighthouse, built by John and Jacob Rooney between July 1873 to October 1874, is an 'ironclad' design. It consists of a hardwood frame surrounded by prefabricated iron cladding imported from Great Britain, with softwood internal staircase and floors. At the top of the tower is a cast iron compartment called the lantern room, in which the lens is housed. The lantern room has a balcony and a cast iron ball with a weather vane on its roof. During its operational life from 1874 to 1987 its cladding and internal structures were replaced as they became worn or rusted.
The lens currently in the lantern room is a third-order dioptric lens supplied by Australian Maritime Safety Authority (AMSA) in 1993, similar to the original lens which was removed in 1920 when the lighthouse was automated.