Chapel, Ferniehurst Castle

The Chapel at Ferniehurst Castle is a 17th-century building that was re-roofed in 1935. It is an oblong, single-storey structure with an attic, featuring three bays and Renaissance detailing. The exterior is constructed from rubble sandstone with ashlar dressings, showcasing buckle quoins on the front and quoin strips at the rear, along with steep crow-stepped gables.

On the southeast (front) elevation, there is a two-leaf boarded door set in a round-headed surround, which is accented with long and short quoins, voussoirs, and oval rustications. The short dressings are roll-moulded, and the imposts feature dog-tooth carving. Above the cornice is a framed armorial panel displaying the arms of the 1st Lord Jedburgh, along with the initials SD above AKAS (Sir Andrew Ker and Dame Anna Stewart). Flanking the door are cross windows with moulded stone mullions and transoms, all framed with moulded architraves and ashlar bands. The roof is adorned with three piend-roofed bipartite dormers that are slate-hung.

The northeast elevation features a gable end with modern timber stairs leading to a first-floor roll-moulded doorway, which was formerly the entrance to the laird's gallery. Above this doorway is a blocked and moulded oculus. The northwest elevation is blank, while the southwest elevation has a gable end with a window that was once a doorway at ground level.

The building has timber windows, including four-pane sash and case windows in the dormers. The roof is steeply pitched, covered with graded grey slates, and features beak skewputts with a ball carved from the lower face. The interior has been refitted following a fire.