Part 24 was last updated in April 2019 by the Town and Country Planning (General Permitted Development) (Amendment) (Wales) Order 2019.
Cafodd Rhan 24 ei diweddaru ddiwethaf ym mis Ebrill 2019 gan Orchymyn Cynllunio Gwlad a Thref (Datblygu Cyffredinol a Ganiateir) (Diwygio) (Cymru) 2019.