The following text is from the original listed building designation:
HORSMONDEN SCHOOLHOUSE LANE TQ 74 SW (east side) School House Farmhouse 1/97 GV II
House. Circa 1500, altered C17. Timber framed, clad with painted brick on ground floor and rendered with applied timber studding on first floor. Weather boarded left return; right return tile hung with sandstone base. Plain tiled roof. Wealden hall house plan in origin. Two storeys, basement and attic on plinth with half-hipped roof and stacks to end right and clustered to centre left. Gabled dormer to right. Four wooden casements on each floor. Original entry to centre left, now by glazed door in left return in gabled timber porch dated 1946; basement openings to left return elevation. Catslide outshot and late C20 dormers and alterations to rear. Interior: the roof rebuilt C17 to staggered purlin pattern re-using old timbers, some soot blackened. The two end bays with transverse cambered tie beams with mortices for crown posts. Full frame visible with arched braces and with roll and hollow chamfered spine beams. Red brick and stone stack (C17) and stone lined cellar, part rebuilt with red brick.
Listing NGR: TQ7219941375

English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.