Mae'r ymgynghoriad hefyd yn ceisio rhoi diffiniadau clir o Addasiadau Tai Bychain, Addasiadau Tai Canolig ac Addasiadau Tai Mawr. Er enghraifft, efallai mai addasu ychydig a gwneud ychydig o waith cynnal a chadw yw ‘addasiadau bychain’, pethau fel gosod canllawiau neu socedi ychwanegol. Gallai ‘addasiadau mawr’ olygu adeiladu estyniad neu symud cegin.
The consultation also aims to set clear definitions of Small, Medium and Large Housing Adaptation. For example small adaptations may require minor modifications and minimal maintenance, such as hand rails or additional plug sockets. Large adaptations could include building an extension or relocating a kitchen.