Graig-Llwyd Mission Room was built prior to 1880 and although now noted as demolished it may simply have been altered out of recognition into a dwelling. The mission room was a single storey building containing a single large room. It had a slate gabled roof and a simple gabled porch on the north. It was lit by ecclesiatical pointed windows, three in the south wall, one in the west and two on the north. The Mission Room was officially closed in 1962.

RCAHMW, July 2009