Gatehouse range including stabling, cowhouses and walls enclosing yard to south at Madryn Farm

Madryn Farm includes a model farm complex dating from the 18th century, featuring a gatehouse range, stabling, cowhouses, and walls enclosing a yard to the south. The complex is characterised by long buildings on the east side, separated by a Tudor Gothic style gatehouse. A large yard for cows is located to the south, enclosed by a wall with mock crenellations. Two substantial parallel ranges north of the yard, one containing a cart shelter, barn with a granary above, and smithy, while the other houses the main stabling, are linked by a connecting range on the west. The main buildings are constructed from a mix of uncoursed and roughly coursed rubblestone, with regularly coursed and dressed rubblestone used for the gatehouse. Roofs are slate, generally gabled or lean-to, except for the half-hipped roof on the north end of the west connecting range. A wall originally encircled the north side of the complex, but this has largely been removed, with only a short section of crenellated wall remaining in the north-east corner, and still extant on the south side of the main yard.

The gatehouse range is a long, single-storey building on the east side of the yard, containing stabling to the north and cowhousing to the south, with the gatehouse itself acting as the division. The range has a lean-to profile on the exterior (as seen on the yard-facing side), and features a series of mullioned and transomed windows, occasional plank doors, and glazed roof panels. The gatehouse itself has voussoirs to a Tudor archway, above which is a moulded cornice and a clock flanked by narrow slits. A crenellated parapet extends to the returns, with octagonal corner turrets and a lead-capped cupola with a weathervane set behind the parapet. The yard-facing side of the gatehouse range mirrors the exterior appearance, with the stabling benefiting from large, paired mullioned and transomed windows, alternating with boarded doors, and ventilation through triangular vents in the roof slopes, and further vents to the ridge. There are three full-height wide openings at the north end.

The wall on the south side of the large, southern yard is crenellated, incorporating ventilation slits in the form of cross-shaped arrow loops for lean-to calving sheds facing the yard. It features slightly projecting square corner turrets, with the lower section of the wall terminating in another turret to the east on the roadside. The wall on the west side of the yard is also lean-to, but the slates have been replaced with asbestos sheeting.

The stabling retains original partitions, hay racks, slate, and cobbled floors, and features A-frame roof trusses in both the stabling and cowhousing areas.