Underdown

This is a small country house dating from the late 18th century. It is constructed of ashlar with a lead roof hidden behind a blocking course, over a moulded cornice and fluted frieze decorated with paterae. The house is three stories high and has three bays, with the outer bays featuring full-height, segmented bowed fronts. The windows are sash windows with glazing bars, the central ones set within plain architraves. A decorative band runs along the front of the ground floor. The central entrance features a panelled door flanked by narrow side-lights, all within a doorcase with thin pilasters, a fluted frieze, dentilled cornice, and a central pediment.

A mid-19th century five-bay, arcaded loggia, now partially blocked, extends from the north elevation, alongside a four-stage water tower at the rear left. All windows on the tower have architraves, and the upper stage features triple round-headed windows. A rear service wing, offices, and staff flat are also present. The interior was damaged by fire in 1983 and remained unrestored at the time of the survey.