Refunds and exceptions can apply in certain circumstances, but the period in which they apply is limited to 3 years from the date of the new purchase or sale of the former home, as relevant.
Er enghraifft, pan fydd yr amodau wedi’u bodloni, gan felly cael gwared ar y rhesymau dros atal y drwydded, ond bod y cyfnod atal yn hirach na'r cyfnod apelio o 3 mis.