If they want their money back fast like a flip then let them flip it and you buy it as a primary residence with a conventional or fha mortgage.

As far as the sale of a property with a mortgage on it, that all gets sorted out at close. ie, you bring your money, the bank gets what they have coming, the realtor gets what they have coming (if there's one involved) and the seller gets the rest.

@Diandre PiercePaying down mortgages is the opposite of scaling.

I have a few properties and am also a mortgage broker, happy to answer any questions about general investing or financing options.

.: Hello,Did anyone received post closing audit from mortgage company.

My first mortgage was almost 11% and that was a good rate.

Also the home is a subject to, where we are paying the remaining 3% mortgage, so a full refi would not be a great answer either. 

Pricing tools that exist on the market are decent, but you also need to know how to control it, otherwise, it will go nuts with unrealistic rates far out and extreme last-minute discounts. 

With most mortgages you can move after one year without any problems.

They wouldn't be able to get a mortgage, but would have to do some kind of SBA loan or other commercial loan for the business with the properties as part of the business.