This outlying area of Islington carries a surprising wealth of historic architecture and Newington Green has become a conservation area. On the west side of the Green (numbers 52–55) is London's oldest surviving brick terrace, which is Grade I listed. These were built in 1658, and 100 years later were home to Price and Rogers. Over the subsequent centuries many changes were made, internally and externally, in particular adding an extra storey to one of the middle houses and replacing its narrow staircase with a wider one with mid-Georgian detailing. At an unknown date the windows were enlarged and changed from mediaeval oak and leaded light mullion and transom pattern to Georgian vertically sliding sash windows. In the 1880s the floor levels of the front rooms were lowered to street level and shop fronts were added to all of them. In the 1980s the houses were in such poor condition that there was a serious danger of them collapsing. The Greater London Council bought three of them, carried out major structural repairs and sold them on to private clients.