Range of outbuidings E of Trefenty farmhouse

This is a mid-19th century complex of agricultural buildings situated to the east of Trefenty farmhouse. Constructed of rubble stone with brick dressings and slated roofs, the buildings form a rough "E" shape, incorporating a long east-west barn and three lofted wings projecting southwards.

The long barn has a northern wall with four loft windows featuring stone voussoirs. To the left, two windows are positioned above a stable with a door flanked by single windows. A higher, shorter window sits between the first two loft windows, also above the stable door. A tall, cambered-headed doorway, whose original stone voussoirs are visible above a reduced opening, is located between the second and third loft windows on the ground floor. A similar doorway to the right of the fourth loft window has been blocked with an inserted ground floor door. A small, blocked arched opening, supported by two stone corbels, is situated between the third and fourth loft windows at ground level, alongside a boarded timber door. A section to the right has been altered to include a ground floor cartshed, supported by two square, rendered brick pillars with a long concrete lintel. The first floor features two rectangular openings with concrete lintels, red brick dressings and stone sills, likely dating to the late 19th or early 20th century.

The three projecting wings have broad gabled ends, with the outer wings in an “L” shape and gabled projections on the outer sides. Alterations have obscured the original form. Broad, semi-circular red brick arches built into the first-floor gables may have once been much larger openings. Red brick dressings are generally used on the earliest openings, while black brick angle quoins and dressings may indicate a later phase of construction. The central wing includes a broad window with brick jambs and a concrete head over a double opening, flanked by a single opening, all inserted and fitted with sliding doors. The right wing has a window above sliding doors, a door to the left with a black brick cambered head (inserted), and an earlier door to the right with a red brick head, although the outward face of the gable is obscured by 20th-century additions. The left wing features a window above inserted sliding doors with single doors on either side, both with black brick heads. A very large red-brick headed lunette is present in the gable, alongside a door and window, both inserted. Stone cornerstones are visible throughout.

Between the wings are long alleys leading to the gables on the south side of the main barn. The two gables at the heads of these alleys overlap the roof lines of their flanking wings, each featuring a door and window.

Inside the barn, the central section is open to the rafters, supported by angle-strut tie-beam trusses. A pair of tall south-facing arches connect to the wings, with red brick heads. An open timber staircase on the right provides access to the loft above the cartshed to the west. A similar loft exists to the east, though a visible staircase is absent. Short wings at the south house store rooms, while the long wings formerly contained large areas used as a cattle shed, feeding shed, and milking parlour. The walls are limewashed and the roofs are broad, with trusses supported by aisle posts and angle brackets, some incorporating decorative notching.