If migrating means gone for good, then better sell.
If just work overseas, then maybe keep it to stay when come back next time.

Just checked my ph3 hse after some handover rectification.
Does anyone know where to get cleaners for the move clean-up?

I think u can find the form in the house owners manual. I think u need to put a small deposit then declare what u want to do.

But if no demolition, no need for rubbish bin then it is simple installation. But if no form, the contractor can't come in or bring things out at will. It is always good to follow the procedure.