Primary residence vs. investment property?

Whats to prevent someone from saying on a mortgage application that they are purchasing a home as their primary residency, then selling it 6 months later anyways. I mean what are the penalties in this case? primary residence it seems get better loans and are easier it seems than investor loans, so why can't you... show more Whats to prevent someone from saying on a mortgage application that they are purchasing a home as their primary residency, then selling it 6 months later anyways. I mean what are the penalties in this case? primary residence it seems get better loans and are easier it seems than investor loans, so why can't you just pretend the house is for you?
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