An archaeological watching brief was carried out at 10 Montfort Close, Westham, East Sussex to monitor groundworks associated with the construction of a parking area and ramped access drive onto the High Street. Limited evidence of Roman activity was found including a single sherd of East Sussex Ware along with some pieces of ceramic building material, all probably residual in nature. These could have been robbed out from the nearby Roman Fort and reused in the medieval period, or may be evidence for the remains of Roman occupation in the vicinity of the site. A northwest to southeast orientated medieval ditch running diagonally off the High Street could have originally been a tenement boundary ditch, The ditch includes a possible post hole, and also has an offset on its north east side, which could be a continuation of the same ditch or another feature. The pottery places the infilling of this ditch at the end of the 12th or early in the 13th century, and the presence of earlier pottery dating to the mid 11th to earlier 12th centuries provides a possible timeframe for this activity. The filling in of the ditch and a lack of later medieval activity may indicate that the settlement of Westham was contracting at this time, or that the site had seen a change in its use.