@David Cheng - So, SBA requires 51% of the income be associated with the owner-occupant. 

My dad is retired and his credit score isn't the greatest while my credit score really good and debt to income is pretty low right now.Mortgage Owed: 118,000Money to Seller:  75,000Est.

Firstly, conventional loans now allow for ADU income to be counted as borrower income for financing.

It has no income, no assets, no credit.

Expect your loan to be underwritten using an appraisal that is based on the markets long term rents, not the higher income you presumable expect to collect operating as a STR.

Hi Steve,You could put a second position loan on it - like a HELOAN but this will be based off of income/tax returns.

I earn much higher returns than I ever did as a rental investor, and don't have to lift a finger after the initial vetting discussion.That said, some investors really do enjoy building a side hustle business around real estate.

I would estimate that if a manager was to provide this service only, they would charge a bit more as they would not be receiving continual income over the life of the lease.Feel free to reach out if you want to discuss some options that I may provide. 

If a lot are empty you may not get that monthly income for some time.

You'll pay high interest, which offsets the interest you earn on a new investment.