Harpsden Court was the home of the lords of the Manor of Harpsden since Domesday and probably earlier, judging by its Anglo-Saxon name.  This survey of the buildings relies on the 1586 estate map by John Blagrave of Reading, commissioned by Humfrey Forster. The birds-eye view shows the existing front range, dendro dated to 1567/68, located between three courtyards with numerous outbuildings. These no longer exist. The house itself has been extended with an additional C18^th kitchen wing (1722) on the west side and a further rear wing, of an early C19^th date at the rear/south side.

During extensive recording work by members of the Henley Archaeological & Historical Group and the Oxfordshire Buildings Record, an earlier tower type structure was discovered, having been retained under the 1567 Tudor roof. All visible walls, mostly hidden behind square oak paneling, are of rubble stone, flint, some ashlar, and some corner tiles construction. A pointed arch stone window survives in the east wall at first floor level of the now enclosed tower structure, indicating a late 12^th/13^th century building date for this part . –  The Strawberry Hill fenestration, much of it with false windows adding grandeur to the main façade, and a porch of c. 1900,  were the last alterations to its principal elevation.