Qualify For More Loans. Use This to Start Investing?

[Account Closed]

We have built our house and it’s valued at over double what the mortgage is. We qualify for more loan (on the house). I’ll assume this to mean we would also qualify for another mortgage for investment. No money down required. Could we use this to start investing?

Excuse me if this sounds remedial. Reading about BRRR it seems like you should refinance homes that are making income. This is our actual home. So I'm pretty confused.