The information on both mandatory and non-mandatory DFGs helps provide a picture of the number and types of DFGs and the costs of adaptations at a local and national level.
Mae'r wybodaeth am GCAau gorfodol ac anorfodol yn helpu i ddarparu darlun o nifer y GCAau a'r mathau o GCAau a chostau addasiadau ar lefel leol a chenedlaethol.