The following text is from the original listed building designation:
HORSMONDEN GROVEHURST ROAD TQ 7040-7140 (west side) 7/47 Drum and Monkey House and Cottage 20.10.54 GV II
House, sometime alehouse, now house pair. C15 or earlier, extended and altered C17- C18. Timber framed and exposed large panel frame with arched braces, extended with timber frame clad with weather boarding. Plain tiled roofs. Hall house of 4 framed bays with cross wing. Two storeys with hipped roof with gablets and stacks to rear left, to centre left with crenellated crown and projecting at end right. Half-hipped cross wing projecting at left. Three light casement on first floor of cross wing with 2 single lights below, and main block with central projecting and gabled 2 storey bay window reconstructed C20 except for the gable, and 2 two light wooden casements on first floor and 3 light casement to right on ground floor. Rib and stud door to end right, and early board and stud door to centre left, the doorcase made of durns. Left return with regular fenestration of 3 wooden casements on each floor and central raking porch with door in right side. Catslide outshot on stone base to rear. Interior: the open hall re-opened late C20, with crown post on chamfered tie beam, with arch braced crown post trusses. Large inglenook fireplaces. King post reported in upper chamber, not seen at time of inspection.
Listing NGR: TQ6979440572

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