The following text is from the original listed building designation:
TR 25 NE PRESTON WALMESTONE
5/216 Great Walmstone
II
House. Late C16. Red brick in English bond, rendered to entrance elevation. Plain tiled roof. L-shaped plan. Entrance front: two storeys on plinth with hipped roof and projecting hipped wing to right. Stack cluster to right, and C19 stack to left. Two storey hipped entrance porch on left return of projecting wing, with glazing bar sash on first floor in chamfered surround with label hood. C20 rib and stud door in chamfered arched surround. Irregular fenestration of wooden casements and glazing bar sash. Rear elevation: 2 storeys and attic on high plinth, with projecting and offset section to right. Hipped roof with 2 hipped dormers and stack to right and rear left. Irregular fenestration of wooden casements and glazing bar sashes, in 3 original chamfered surrounds with labels on first floor (that at end right, although now bricked in retains the original wooden mullions). One wooden casement with label-drip surround to left on ground floor, and segmental headed glazing bar sash. Boarded door to right. Tiled outshot at end right.
Listing NGR: TR2540560957

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