The following text is from the original listed building designation:
TQ 65 NW PLATT LONG MILL LANE 2/19 (west side) Platt Oast GV II
Oast-house, now converted into dwellinghouse. C19 roundels. added to C17 barn on north side. Random rubble stone ground floor throughout except central roundel which has red brick ground floor. Exposed framing on first floor of granary with C20 decorative plasterwork. Plain tiled hipped roof to granary, plain tiled slopes to roundels, which have been capped.
Listing NGR: TQ6226256610

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