The following text is from the original listed building designation:
TQ 53 NW SPELDHURST THE GREEN (west side), LANGTON GREEN 7/495 Firtree Cottage
GV II
Former cottage, now office of the Institute of Cultural Affairs. Early/mid C19. Ground floor level is red-brown coloured Flemish bond brick with dentil cornice, timber-framed above and hung with peg-tile. Brick stack and chimneyshaft with divided flues. Peg-tile roof.
Plan: L-plan house facing east south east, say east, onto The Green. 2-room plan front block, the left (south) room being the front room of a crosswing projecting one-room to rear. Axial stack serving back-to-back fireplaces between the 2 blocks. Main entrance in rear angle of the 2 wings and a secondary one on the south side towards the rear end.
2 storeys.
Exterior: Irregular 2-window front. Right windows are C20 casements with glazing bars, lower one under low brick segmental arch. Left windows are C19 20-pane sashes, lower one broken forward in a shallow brick bay. Roof is gable-ended to right and gable-ended crossroof to left. Left end also has C20 casements with glazing bars. Single first floor window towards rear with small gable over and below it a gabled porch containing C20 part-glazed door (similar door to rear).
Interior: No exposed carpentry. Roof not inspected.
Firtree Cottage was probably the lodge belonging to nearby Langton House (q.v.). It is one of an attractive and varied group of listed buildings fronting onto The Green.
Listing NGR: TQ5435539273

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