Advise on loan

[Edgar Aguillon]

My father in law recently bought a house for $90,000 off an FHA loan, has been there for about 8months his daughter my sis in law moved from Chicago and he wants to let her move in while she gets back on her feet as he wants to rent it in the future..he will still be paying for the mortgage himself, my question is.. He is looking for another house for him so how can he go about getting another loan? The bank is requiring a letter asking why he is wanting a second mortgage..