For many years Bardsey Island formed part of the Newborough Estate. Between 1870 and 1875 the island's farms were rebuilt. A small limestone quarry was opened, and a lime kiln set up. "Carreg" and "Plas Bach" are separate buildings, but the remaining eight were built as semi-detached houses, each pair with outbuildings set around a shared yard. The buildings are Grade II listed. In 2008, Cadw gave £15,000 to help with some repairs. Only one of the original "croglofft" cottages, "Carreg Bach", is still standing. Given the choice of a harbour or a new church, in 1875 the islanders asked for a place of worship; a Methodist chapel was built.