S.73 Application: variation of condition 4 (materials) pursuant to planning approval 2017/0565 (Restoration and conversion of building to form 1 no. five-bedroom dwelling and 2 no. two-bedroom holiday let cottages, including demolition of outbuildings and associated access and landscaping works) to enable a change from timber window units to timber (internally) and aluminium (externally) window units (matte black in colour).