The appeal is allowed and outline planning permission is granted for the demolition of the existing house and for residential development of 52 units (50/50 mix market and affordable housing) with access via Northbrook Road at the former Swanage Grammar School, Northbrook Road, Swanage, Dorset, BH19 1QE in accordance with the terms of the application, Ref 6/2013/0150, dated 12 March 2013, and the plans submitted with it, subject to the conditions in the Schedule at the end of this decision.