Mary Fitzpatrick (Fianna Fail) | Oireachtas source

When a building is built for a certain purpose and, at a later date, after it has received its certification and has been in operation for that original purpose, there is a change of use, what requirement is there is for an updated certification for that property? I am thinking of situations in which a commercial property is changed to residential accommodation, whether for short-term use or more long-term permanent accommodation.