single storey side extensons cannot be closer to a highway than any wall in the side elevation of the existing dwellinghouse, or at least 10.5 metres from the highway, whichever is nearest the highway
ni chaiff adeiladau allan ymestyn y tu hwnt i ochr y tŷ pe bai’r datblygiad yn agosach i’r briffordd na’r tŷ presennol, neu dylai fod o leiaf 5 metr o’r briffordd – pa un bynnag sydd agosaf