Single-storey rear and side extensions; installation of two rooflights into roof of existing rear addition and door into front elevation; alterations to existing fenestrations involving enclosure of recessed front entrance with glazing to form porch, enlargement of side-facing window opening at first floor level, installation of obscured-glazed side-facing window opening on at first floor level, and replacement of existing window frames and glazing with identical window frames and glazing; and erection of front boundary wall.