Lan Lash, including attached former cow sheds

Lan Lash is a two-and-a-half-storey, two-window house, likely dating from the 18th century, constructed of whitened rubble stone with a slate roof. It possesses a gable stack to the left and an end stack to the right, both roughcast. A lower wing attached to the left probably represents the earlier house and features a continuous outshut along the front. To the right of the main house is a lower cow shed, and further along and set back is another, smaller cow shed with a steeply pitched roof.

The main house has a central entrance within a later gabled porch and a boarded door. Horned sash windows on the left and right sides are set within original segmental-headed openings. Smaller upper-storey windows are positioned centrally within the line of the lower-storey windows. The left side of the house has 20th-century openings to the outshut and two gabled dormers with matching windows. The left gable end of the wing includes a lean-to and porch. The rear of the wing features a fixed upper-storey window and a later, inserted lower-storey window. A two-light attic casement is situated in the left gable end of the main range, positioned to the left of the stack. A rear wing extends from the main range, with a lean-to and two two-light windows along its side wall. This wing’s gable end has two-pane sash windows on each storey. An outshut with fixed windows is located to the left of the wing, behind the main range and extending to the rear of the attached cow shed.

The cow shed to the right of the main range was constructed in two phases. It features three doorways with later stepped brick segmental heads and a loft. The doorways have boarded split doors. Above the left doorway is an inserted window under a wooden lintel, likely providing accommodation for farm workers. The later cow shed, detached further to the right, has a steeply pitched roof and three boarded doors set within segmental-headed doorways with brick dressings. Its gable end is punctuated by two windows also with brick dressings.

Inside, the entrance hall has quarry-tile flooring and a straight staircase at the rear on the right. A panelled door leads to the parlour, while a boarded door on the left accesses the kitchen. The kitchen includes a fireplace with a timber lintel and a quarry-tile floor. The wing has a larger, 18th-century fireplace with a timber lintel. The cow sheds have mid-20th-century concrete stalls.