Demolition of rear conservatory and alterations to rear extension and garage, erection of single storey rear extension and installation of raised decking, conversion of garage, erection of front porch, and erection of new boundary treatments to 25 Highfield Avenue. Demolition of rear extension and shed, alterations to garage, erection of single storey side and rear extension, formation of partially covered patio area and Erection of new boundary treatment to 27 Highfield Avenue. (Amended description)