Replacement of a single storey ground floor rear extension and erection of a mansard roof extension including one front and two rear dormer windows plus one rear roof light. Internal alterations, involving alterations to fireplaces, conversion of the first floor bedroom into a bathroom, and second floor bathroom into a bedroom, plus the creation of a new WC at basement level, together with other associated internal works. (associated full planning application ref: 22/03150/FUL).