The following text is from the original listed building designation:
HIGH HALDEN ASHFORD ROAD 1. 5272 Tanden TQ 93 NW 5/212 II
2. Two cottages. C19. Two storeys. Ground floor red brick and grey headers, above tile hung except the easternmost window bay which is weatherboarded. Tiled roof. Four casement windows.
Listing NGR: TQ9142838160
(1)

Tanden Farmhouse consists of five timber bays with later additions at each end. The majority of the roof has been replaced. In 2007 a dendrochronological assessment was carried out by Tree-Ring Services. Ten samples were taken from the timber frame of the building. Two precise felling dates in the winters of 1525/6 and 1528/9, along with three other consistent felling date ranges, indicate that the three west bays were probably built as a single phase in 1529 or soon after. (2)

<1> English Heritage, List of Buildings of Special Architectural or Historic Interest (Map). SKE16160.

<2> Tree-Ring Services, 2008, Dendrochronological Analysis of Oak Timbers from Tanden Farmhouse, High Halden, Kent, England (Unpublished document). SKE17182.