As part of the review of Building Regulations I am going to introduce a number of low cost changes to existing buildings when they undergo renovation or extension.
Fel rhan o'r adolygiad Rheoliadau Adeiladu, rwy'n mynd i gyflwyno nifer o newidiadau isel o ran cost i adeiladau sydd eisoes yn bodoli wrth eu hadnewyddu neu adeiladu estyniad.