I get enough cheap out of state properties to give myself some cash flow, allowing me to afford the mortgage payments on a couple houses around here--keeping some exposure to the Seattle area's potential for appreciation.

That's where a residential mortgage bank, who will hire a residential appraiser, dips their toes into pseudo-commercial financing, but will not look at a T-12.

This equity can be leveraged for future investments.Cash Flow Generation: By renting out the property, investors can generate rental income, which can be used to cover mortgage payments, property management fees, and other expenses.

It will be faster, cheaper, simpler. 

As you own your properties, they are hopefully appreciating in value, not only from your tenants paying down the mortgage, but also through market appreciation as well.  

This was one of the options given to me by my mortgage lender and the option that was chosen by the parent I am borrowing the money from.

Yes, it's not different than going from FHA to another other type of conventional mortgage.

Why do I see some independent mortgage loan officers submit borrower's application directly to lender without going thru their employer/broker's loan processing?

., up to $750k mortgage)- savings on paying rent (i.e., the rent you are currently paying)If not, drop in your thoughts on which value drivers need to be included and I can pull a quick one together. 

We built an ADU, 2 bedrooms + loft for $300k.The downstairs mother in law unit makes about $17k a year (gross).We live in the main house.The new ADU makes about $65k a year (NOI) as a STR.The mortgage is a $500k 30 years fix mortgage at 3% interest rates$2,500/mo.Cash + Mortgage: $500k + $530k= $1,030,000ppraised for $1,400,000Cashflow: $5,000/month 10% cash on cash + live for free.: $400k for $530k invested, so 75% return.