Is this legal or what should I do about this issue if it occurs?

[Joshua Starbuck]

Hello BP! Was wondering if anyone could help me out with this issue if it were to occur. I am in the military and looking for a home/rental property. I want to "house hack" a duplex, triplex or quad with a VA or FHA loan which will require me to stay in the property for 1 year. My question is, what if I move in and then 6 months down the road, and then I get stationed at a different base? Will that require me to put down a 20% down payment if/when I move out since it will then be considered a investment property or will I have to put the 20% down right at the beginning and not be able to use my FHA or VA loan?