Once the works have been completed, the successful applicant must then live in that property as their main and only residence for a minimum of five years.
Ar ôl cwblhau'r gwaith, rhaid i'r ymgeisydd llwyddiannus wedyn fyw yn yr eiddo hwnnw fel ei brif breswylfa a'i unig breswylfa am o leiaf bum mlynedd.