In order to fulfil its development programme, the Contracting Authority is seeking to appoint developers to provide land for the development of social housing. The Contracting Authority seeks land in Lisburn, Northern Ireland. In the interests of providing an efficient housing management service, the Contracting Authority will not consider Sites which provide more than 70 units or less than 50 units. Preferably units are to be delivered at a single Site, however, adjacent sites maybe considered.