Cil-yr-ychen Farmhouse

Cil-yr-ychen Farmhouse is a fine vernacular farmhouse dating from the 18th century, with a complex plan and built of cream-painted rubble masonry, partially rendered. The roof is primarily slate, with the southern slope of the main range covered in local sandstone slabs.

The main range of the farmhouse runs east-west, comprising two units with an entrance and original staircase bay in between, facing north towards a small walled yard and the farmyard. A large external chimney stack, slightly tapering with offsets and a smooth rendered section above roof level, is situated at the west gable. A projection marks the location of a lost smaller chimney at the south gable.

Two wings have been added to the original core. A gabled, single-storey kitchen extension with a loft is located at the rear, attached to the east bay of the main range and overlapping the centre, creating an "L" shape. This wing likely has a truncated form, with a low-roofed shed at its gable end possibly representing the remnants of a further bay. A front wing, also forming an “L” shape with the main range, extends north-westwards, creating a full-height two-bay addition to the right unit. This wing has a large end chimney with a right-side offset that blends with the roof, both rendered smooth.

The north elevation of the main range and the east elevation of the front wing were reworked in the 19th century, adding two similar through-eaves gabled dormer sash windows with four panes each. Below these windows on the main range is a 12-pane exposed-sash window with a stone lintel and sill, and a modern doorway in a neo-Georgian style. A date stone is positioned between these features on the first floor. The adjacent east-facing elevation of the front wing features a boarded door with a stone lintel positioned beneath the right dormer. The gable elevation of the front wing has a small modern window at upper storey level within the chimney and another at ground storey level to the left of the chimney.

The west elevation has a door and window in the north-west wing, along with a ground-storey window to the left of the chimney and an upper storey window to the right of the chimney in the main range gable. The south elevation features a four-pane sash window above and a larger window below, located at the rear of the main range, with a slight buttress at the left corner. The gable end of the south wing shows considerable repair or rebuilding, revealing the marks of a lost further bay with a slightly lower roof.

A small walled courtyard is situated to the north-east of the house, enclosed by a low stone wall with a gate to the north and steps leading down to the east. A stone and slate shed is located at the corner, including a heck door. A gabled shed extension with local sandstone roofing tiles extends from the east gable end of the main range.

Three large chimneys, all open in 1999, are present; the chimney at the west end of the main range has a replaced bressummer. The staircase in the north extension rises to the loft of the main range and wing. A grain loft is located in the attic, featuring timber strips covering the floorboard joints. A low division separates the centre of the main range.