Pen-y-bont farm is shown on the 1839 tithe award as having 176 acres, occupied by William Jones and owned by Griffiths Howel Vaughan Esq. The tithe map shows the present ' L' shape plan of farm building with the house, and a demolished detached range situated to the south of the house. The Ordnance Survey 25" map of 1875 also shows what are probably the same ranges in more detail. The demolished range was said by the owner to have had a seventeenth century date-stone.

The present farm buildings consist of a late eighteenth or early nineteenth century stone-built, `L' shape combination range, which is timber-framed and weatherboarded to the first-floor of its barn/cow-house part. It adjoins, and is in-line with, a seventeenth century end chimney lobby-entry type house at its east end (NPRN428). Its east to west range includes a lofted cow-house of two bays against the house and a three bay corn-barn with central threshing-bay. The north to south part is built down the sloping ground and consists of: a cow-house at the lower end; the end-bay of the corn-barn; a cart-house and root store; a stable and store; a tack-room and a three bay stable. Other buildings include a lean-to by the horse-engine site, which probably housed its horse. Part of this lean-to has evidence for an oil engine to drive the formerly adjacent feed machinery. A further lean-to on the barn's north side has two doorways and once had a stone slab partition, probably all for housing calves. At the north-west corner of the end entry two door cow-house there is a loose-box with double pitch roof, built after 1875 and by 1901 according to successive editions of the Odnace Survey maps. It has two doorways, an end window and a long timber manger used for housing young cattle.

The first-floor wall framing of the east to west barn and cow-house range has been replaced in some areas with stone walls containing ventilation slits. The weatherboarding has all been removed but sets of nails in the studs indicate its former existence. This type of framing formerly extended into the cart-house/root store by one bay, and there is a part still visible inside the lean-to. In this area on the west wall the stone-work to the south has different coursing, indicating it may have been partly rebuilt.

Visited as part of the Emergency Building Recording programme at the suggestion of Phil Ebbrell, Denbighshire C. C. Conservation Officer.

G.A. Ward and S. Fielding, RCAHMW, 20 September 2006.