3% Conventional Loan

[Sebi Ardelean]

Just received a couple pre approval letters for a 3% down conventional loan. My credit is great and this would be my first home. I'm assuming that's why the down payment is so low. I'm wondering what the restrictions are on a loan like this for owner occupancy. How long before I can move out and rent the place. I know FHA is a year seasoning period so I'm wondering what the restrictions are on a conventional loan. Similar?

Also, what would differ if I went into a loan like this with the intent of using it as an investment property? Would I need a larger down payment?

Thanks in advance!