1. Mill referred to in a Parliamentary Survey of Brecon in 1651. The present building dates from the eighteenth century with nineteenth century alterations. Stone rubble walls under a slate roof. Former internal waterwheel; no machinery remains. The buildings, including the corn-drying kiln, are currently being restored.
Site visited B.A.Malaws, RCAHMW, 24 April 2004.

2. The mill is an extensive building of two and threee storeys on an L-plan. The earliest part is thought to date from c1730, and comprised that part of the east-west range standing to the east of the waterwheel pit. It is thought that the building was extended westwards over the wheelpit c1840, and further extended westwards with the addition of a drying kiln. the north-south wing was also added after 1840. The mill ceased work in 1937/38 after the weir on the Afon Honddu had been washed away. The overshot wheel, now removed, was located in a very deep wheelpit.The drive machinery has been removed; it formerly drove three pairs of stones, two pairs being French burrs and one pair a Welsh gritstone.

Information from Cadw Listed Buildings database.
W J Crompton, RCAHMW, 21 August 2014.