Three trial-trenches were machine-excavated under the supervision of a CAT archaeologist. Trench T1, a T-shaped trench, was 16m long and 1.8m wide; trench T2, an L-shaped trench, was 13m long and 1.8m wide; and trench T3 was 14m long and 1.8m wide. The trenches were cut through modern topsoil (L1, c 0.2-0.25m thick, firm, moist dark grey/brown silt) and an accumulation layer (L2, c 0.11-0.15m thick, firm, moist medium grey silt) onto natural (L3, firm/hard, dry medium grey sandy-silt with frequent chalk pieces, encountered at a depth of 0.35-0.36m below current ground level). An archaeological evaluation (three trial-trenches) was carried out on land at Chesterford House, High Street, Great Chesterford, Essex, in advance of the construction of two dwellings. The site lies outside of the Roman and medieval settlement of Great Chesterford, a town of nationally-significant archaeological importance. Previous excavations to the immediate northwest revealed remains of Roman extramural settlement and an Anglo-Saxon burial. A single Roman ditch and a medieval or post-medieval pit cut by two postholes were recorded during this evaluation. The former feature formed part of the extramural area of the Roman town, while the latter features are probably the product of agricultural activity in the area prior to the construction of Chesterford House by the 19th century.