South Airmyn Grange Farmhouse

South Airmyn Grange Farmhouse is a brick farmhouse dating from the mid-to-late 18th century, with later alterations. It is built on a sandhill beside the 17th-century Dutch River, and an adjoining range to the west is of no particular interest. The farmhouse has a double-depth plan, incorporating a central entrance hall with two rooms to the south front, a kitchen, and an outhouse wing to the right.

The main symmetrical front has two storeys and three bays, with a single-storey single-bay wing and a lower single-storey single-bay outhouse to the far right. A plinth runs along the base. Two stone steps, with moulded nosings, lead to a part-glazed six-panel door with four panes above two fielded panels, set within a keyed stucco arch. Original 19th-century four-pane sash windows are set in flush wooden architraves with sills and similar keyed arches. A two-course brick band runs across the first floor. Stone-coped gables feature shaped kneelers, and end stacks are present. The kitchen wing has a roof composed of two courses of slates at eaves level, topped with pantiles, a stone-coped gable with shaped kneelers, and a rear end stack.

The rear elevation has stone steps leading to a central part-glazed panelled door, flanked by single sashes; the left window is beneath a keyed rubbed-brick basket arch, and the right window sits beneath a keyed rubbed-brick flat arch. A first-floor band is also present. Similar windows are found on the first floor, with a central keyed round-headed stair window.

Inside, the entrance hall features a moulded cornice and a pilastered round arch leading to the rear stairhall. A substantial open-well cantilevered staircase is supported by a wooden column, with a ramped and wreathed handrail, column-on-vase balusters with square knops, and fluted column newel posts. The upper hall boasts a moulded plaster frieze and cornice. The drawing room on the ground-floor left incorporates fielded-panel dado, fluted dado rail, moulded plaster panelling, a coved plasterwork frieze with festoons and foliate decoration, a dentilled cornice, and a composition chimney-piece. The chimney-piece has a fluted surround, an urn and festoons to the frieze, a moulded overmantel, and flanking half-domed alcoves in pilastered surrounds with fluted archivolts. The dining room to the front right displays a dado rail and moulded cornice, along with a pair of alcoves with fielded-panel doors in architraves. The study at the rear left has a moulded cornice, a chimney-piece with a fluted frieze and an ornate cast-iron grate, flanked by arched alcoves with fielded-panel doors in keyed pilastered surrounds above fitted chests of drawers. Fielded-panel window shutters, reveals, and doors are set in architraves throughout the house. The roof space contains six bays with braced queen struts and pairs of staggered butt-purlins.