August 2014 saw the completion of the excavation of a large sample (3025m 2 = 25 per cent) of one of the larger insulae (IX) of the Roman town of Calleva Atrebatum (Silchester, Hampshire, UK). The fieldwork had taken 18 summers of six-week seasons, the equivalent of over two years of continuous excavation, with teams, including staff, of 130-150 participants. The aim of the project at the outset was to characterise the changing life of the town from origins to abandonment. The initial estimate was that the project would certainly last five years, but not more than ten. However, well within five years it became abundantly clear that, despite antiquarian interventions, notably by the Society of Antiquaries in Insula IX in 1893, the preservation of the archaeology was such that a duration of 15 seasons was highly likely. Indeed, such was the rich complexity of the late Iron Age and earliest Roman archaeology that it only became possible to predict the end of the fieldwork a couple of seasons ahead, and that was on the assumption of reasonable weather, with no repeat of the extremely wet summer of 2012. Both the landowner, Hampshire County Council, and English Heritage, the organisation through which Scheduled Monument Consent (SMC) was negotiated (i.e. the permission to excavate), supported the project to completion in the field. The licence from the County Council and SMC were granted for five years at a time; altogether four consents and renewals of licence were sought and granted over the duration of the project. The land within the town walls had been set aside as pasture and an area including space for a campsite and the infrastructure of the seasonal excavation was fenced off for the duration; the limits of the area being adjusted as the spoil heaps grew in volume and the corresponding space they occupied.Insula IX was chosen for a number of reasons: with no evidence of public buildings it could be regarded as representative of the private sphere, embracing domestic, commercial and artisanal aspects of town life . Choosing an insula which contained buildings oriented obliquely to the Roman street grid offered an opportunity to test Aileen Fox's theory about an 'Old' and a 'New' town plan (1948). With aerial photography indicating the presence of buildings which had not been located by the Society of Antiquaries' project to recover a complete plan of the Roman town, Insula IX offered the promise of comparing them with structures which had been investigated by the Antiquaries in 1893 (Fox 1895;Bewley and Fulford 1996). Apparently open areas between buildings offered the possibility of identifying the presence of timber buildings, which the Victorian techniques of excavation were not able to identify on a systematic basis, in and around those with masonry foundations. The choice of Insula IX also provided the opportunity of investigating the context of one of the latest Roman/ post-Roman objects from the town: the Silchester ogham stone, a truncated Roman baluster column which carried an inscription in ogham, a ...