This is a circular letter to announce the approval and publication of the amendments to Approved Document M and to draw attention to the transitional provisions for the changes.
Mae hwn yn gylchlythyr i gyhoeddi bod y diwygiadau i Ddogfen Gymeradwy M wedi’u cymeradwyo a’u cyhoeddi ac i dynnu sylw at y darpariaethau trosiannol ar gyfer y newidiadau.