S73 application to vary Condition 2 (approved plans) of 17/04828/FUL, to allow substitution of plans to amend the design of dwellings and to discharge conditions 3 (Materials), 4 (Construction Management Plan), 5 (Access Construction), 6 (Roads, footways etc construction), 7 (Surface Water and Foul Drainage) and 9 (Surface Water and Foul Drainage)