Derwenthorpe is a new mixed tenure development in York which will include around 500 homes upon completion. The scheme is being developed by David Wilson Homes for the Joseph Rowntree Housing Trust and aims to be a socially and environmentally sustainable community.  This case study explores some of the sustainability features of the scheme and, in particular, the role and importance of the sustainable drainage scheme (SuDS) put in place to alleviate flood risk.