Er bod gan Reoleiddiwr Diogelwch Adeiladau'r DU lawer o swyddogaethau mewn perthynas ag Arolygwyr Adeiladu Cofrestredig a Chymeradwywr Rheolaeth Adeiladu Cofrestredig, mae'n bwysig cofio nad yw'n goruchwylio'r awdurdodau lleol yng Nghymru. Ond wedi dweud hynny, mae yn goruchwylio’r Arolygwyr Adeiladu Cofrestredig sy'n cael eu cyflogi gan yr awdurdodau lleol.
It is important to note that while the UK Building Safety Regulator has many functions in relation to Registered Building Inspectors and Registered Building Control Approvers, it does not have oversight of Local Authorities in Wales. It does however have oversight of the Registered Building Inspectors that are employed by Local Authorities.