As far as credit, you would want a score above 680 ideally to get the highest loan to value on a cash out refinance, but I would aim higher at 720+ as that comes with a significant rate drop.

At the current scenario, without knowing anything about you or your properties I will recommend either to look at a loan from your assets using DSCR loan.

Furthermore you can vastly increase your returns through leverage using a non-recourse loan but that will definitely trigger UBIT but again the numbers can still make a lot of sense. 

So we retired the sellers loan within 12 to 18 months.

Cash flow is defined as the money left over after paying for all expenses, including setting aside a certain amount to cover projected expenses like maintenance, vacancies, or capital expenditures.EXAMPLE:Property Price: $250,000Down Payment (25%): $62,500Loan Amount: $187,500Interest Rate: 6.5%Loan Term: 30 yearsMonthly Mortgage Payment: $1,185Monthly ExpensesMortgage Payment: $1,185Property Taxes: $250Insurance: $100Maintenance (10% of rent): $250Vacancy and CapEx (20% of rent): $500Rental IncomeMonthly Rent: $2,500Total Expenses: $2,285Cash FlowNet Cash Flow: $215 per month 💰However, there are many other factors to consider.

I bought this property with a private interest free loan from a friend. the person i bought it from need cash fast so i offered them a low cash offer and they accepted.I had enough money saved up to rehab the house with my savings.

Will he and potential buyer of the property be subject to Commercial financing or will the property still qualify for residential 4 unit and under loan types/primary?

Minimum loan amount is $250k.

However, consider STR seasonality, local regulations, and management demands, and ensure your equity loan and new primary residence costs fit comfortably within your budget.

We did that for about 3 years until Jeff informed me he'd fallen behind on property taxes, and all of his lenders called the loans due.