When first built, the lighthouse did not have an associated dwelling, but one was added the next year. This cottage measured eighteen by twenty-six feet and was detached from the lighthouse. In 1874, iron wire-rope was used to stay the lighthouse on four sides, and Keeper Lloyd was supplied a boat, thirteen feet long. As the station was difficult to reach in rough weather, Keeper Lloyd was authorized to spend up to $200 on materials for a landing. In 1878, Keeper Lloyd’s salary was increased to $250 per year due to the duties required at the offshore station.
On December 7, 1896, the light at Carter Island was improved by replacing the catoptric apparatus (a system of lamps and reflectors) with a seventh-order lens manufactured by Chance Brothers of Birmingham England.
A new lighthouse was built on Carter Island in 1930. The role of dwelling and tower, which before consisted of two structures, was combined into a lovely two-story dwelling surmounted by a square wooden lantern. A fog signaling building was also constructed on the island along with a boathouse and oil shed.
Head Keepers: James Lloyd (1872 – 1883), Albert Locke (1883), Charles M. Collupy (1883 – 1885), Robert McDonald (1885 – 1925), C.L. Hardy (1926 – 1936), V.M. Mathews (1936 – at least 1937).