Advertised as 'the smallest house in Great Britain', Quay House, or no.10 Lower Gate Street, was built as a fisherman's cottage and is believed to date from the late eighteenth or early nineteenth century. It is a small two-storey house with stone-rubble walls under a single pitch slated roof and is built against a tower of the town wall. The interior measurements are 1.8m wide, 2.5m deep and 3.1m high.
Sources include CADW listed building description.
B.A.Malaws, RCAHMW, 22 November 2012.