Legal Point of Residence

[Jt Marting]

I stumbled across an interesting possible loophole, and am curious if anyone knows the legal aspect behind this. I was planning on purchasing a property and house hacking during college, and the numbers just weren't working in the area I plan on going to college. 

That's where residency comes in. As far as I understand, while i'm in college, living on/near campus doesn't count as my legal point of residency. So what is? If I claim myself on my tax returns, and purchase a property while living in college as an investment, can I call that my point of residency and qualify for a FHA Loan or other conventional primary residence loans? And still be able to rent out the property as an investment? These laws get pretty complicated and i'm not trying to cheat the system, but I feel like it's possibly a loophole and I was wondering if anyone knows anything about residency and how it would work in my situation. Thanks!!