If person moves in with his partner, but keeps his original address for bank statements, ESB bills, correspondance with revenue etc, then I'd say he could easily claim that the vacant house is still his PPR if and when he tries to sell it. If that person is still paying all his own mortgage and the partner is paying all her own mortgage, he may even be technically correct in claiming the vacated house as his PPR.
I do believe the revenue will crack down on many cases of ex owner occupiers becoming landlords, however I do not believe such a case will even appear on their radar.
I do believe the revenue will crack down on many cases of ex owner occupiers becoming landlords, however I do not believe such a case will even appear on their radar.