The development of a granny annex would not constitute a requirement for an affordable housing commuted sum contribution, as it does not result in an increase of one net (separate) residential unit.
Ni fyddai datblygu rhandy mam-gu yn golygu bod galw am gyfraniad swm gohiriedig tai fforddiadwy, gan nad yw’n arwain at gynnydd net o un uned breswyl (ar wahân).