An archaeological monitoring was carried out during groundwork for the construction of a single-storey extension to the rear of the building.
The monitoring revealed a natural stratum of sandy clay at between 1.40m and 1.78m below ground level. This was sealed by a succession of subsoil deposits and external soil horizons of unknown date. Overlying dumps of clay and successive baked clay and mortar surfaces suggest the presence of a medieval or later building in the northern part of the site, although there was no associated structural evidence. A thick dump of soil containing post-medieval pottery sealed the postulated building. Three post-medieval pits were recorded along the northwestern boundary of the site.