I am advised by the Central Bank of Ireland that the compilation notes for the mortgage arrears statistics define PDH and BTL mortgages as follows:
Principal Dwellings (PDH):
Mortgage loans to private individuals for house or apartment purchase, renovation, improvements or own construction of housing, fully and completely secured by mortgage on the residential property, which is or will be occupied by the borrower.
Buy-to-Let (BTL):
Mortgage loans to private individuals for house or apartment purchase, renovation, improvements or own construction of housing, fully and completely secured by mortgage on the residential property, which is or will be let for residential purposes
by the borrower. The BTL format should also include mortgages secured on properties which are or will be used as holiday homes or second homes.
In the example provided in the Parliamentary Question, given that the property is not owner occupied it is expected this would be reported in the BTL category. Such cases retain the protections provided under the Central Bank Code of Conduct on Mortgage Arrears where the property is the only residential property in this State owned by the borrower.