This survey aimed to investigate the uran development of Newark-on-Trent, Nottinghamshire from the dates of its remaining timbed-framed houses. The project formed part of a training programme in dendrochronology and was funded by English Heritage between 1998 and 2000. The list of buildings drew largely on Samuel's 1995 survey of the town's timber-framed buildings but also suggestions fro other sources were included. All the buildings on the list, where access was possible, were visited first. During these visits, the buildings were inspected for surviving oak timbers and whether they showed signs of reuse or replacement. The timbers in each house were then graded for sampling according to the number of rings and the presence of sapwood. 24 buildings were visited and assessed by the Laboratory as a result of two phases of the project. On the basis of these assessments, 14 properties were sampled. In the case of two of these, the Govenor's House and 22-24 Kirkgate, this was not the first time the buildings had been sapled as there were specfic questions that were hoping to be answered by returning adnd carrying out further work. One of the buildings chosen to be sampled, 33-35 Cartergate, produced very poor samples with none having enough rings to make analysis worthwhile. Another of the buildings, Snaiths in Kirkgate, was analysed but unfortunately none of the samples were successfully dated. Additionally all samples previously taken by the Laboratory from the buildings in the town were reanlysed using the Laboratory's current procedures and standards. The results in general were as before, with the exception of the slip of four years mentioned regarding the Castle date. Evidence for most dates was strengthened due to the increased number of reference chronologies now avaliable. The estimate of sapwood rings used to calculate felling date ranged were standardised throughout all sites. The earliest timber-framed building in Newark that was dated by dendrochronology is the open hall to the rear of the Old White Hart, situated in the south-east corner of the market place; it is dated to AD 1312 with the front of the building dated to AD 1451. Dendrochronological analysis has dated three more early fourteenth-century jettied buildings in Newark. The oldest of these, 40-44 Castlegate, is dated to AD 1330, the main building and the jetty joists from 22-24 Kirkgate have been dated to AD 1337, and 40-44 Cartergate is dated to AD 1353. Dated to the early part of the fifteenth-century is the Old Tithe Barn, AD 1410-30. Analysis of the timbers from 37-39 Kirkgate dated the crown-post roof (number 39) to the mid-fifteenth century and identified potentially three other phases of construction including a conjectural aisled hall (number 37). Mid fifteenth-century buildings dated include the Woolpakc Inn in Stodman Street, dated to AD 1451, the front of the Old White Hart mentioned above, and the front and rear range roofs of the Govenor's House which were dated to the latter decades of the fifteenth century. Within the 'old borough' no buildings were found to date conclusively to the sixteenth century. In the 'new borough' the Bede House Chapel was dated to AD 1554, apparently settling the question as to whether the building seen today was the original constructed by William Phillipot. Other properties also produced timbers with dates in the sixteenth century but as the number of dated samples in each case is few the conclusions, which can be based on them, are negligible. By the Makret area, 5 Church Street is dated to AD 1665 and the roof of the front of the Old Swan & Salmon on Castlegate to the following year, AD 1656. A raised cruck in its rear extension was built in AD 1745; another raised cruck at Potterdike House in Lombard Street was dated to AD 1740. Timbers from numbers 17-21 Boar Lane produced dates in the fifteenth and seventeenth centuries; however, the earlier dates are thought to be from re-used timbers. Construction of numbers 6-12 Chain Lane would appear to have started in the late-seventeenth or beginning of the eighteenth century and continued to AD 1753. This work has shown that construction techniques in Newark during the medieval period were more advanced than was thought. In particular, the use of jettying has been seen to be as early as AD 1337, and perhaps even AD 1330, when previously it was not believed to have reached this far north until some time later. The tree-ring dates have been used to formulate tentative conclusions about building trends in the town. From the buildings investigated two peaks of buildings have been identified. The peak in the first-half of the fifteenth century is perhaps in a response to the recovery of population levels after the devastation of the plagues in the fourteenth century. The next peak in building identified by dendrochronology does not occur until the mid-late seventeenth century. This building or re-building is considered likely to be due to damage caused during the siege of the town during the Civil War. Sixteenth century building is mostly restricted to the 'outer' borough with timbers of this date in the 'inner borough' usually limited to minor modifications.