If your firend wants to stay in the place AND has the funds/income to do so, they need to refinance in their name ASAP (as part of the process), not 5 yeas from now, not if they remarry, not 10years from now.   

Quote from @Erick Pena: A "good" rental property is one that covers all expenses (mortgage, taxes, insurance, maintenance, property management fees, and any other costs) and still leave a surplus (commonly referred to as cash flow).Calculate cash flow as: Cash Flow = Rental Income − Operating Expenses − DebtThere's much more to it, but that's the basic idea.

You can't sell your account.You can only sell SFR properties based on comps not rental income.

Some of the best investment were made in bad neighborhoods and higher crime rates then as usual the area becomes gentrified and continues to grow in both equity and passive income.

Corporations, S-Corporations, Partnerships and trusts must be represented by an attorney you cannot represent yourself.

Real estate investing has been a passion of mine for time with my mother also having invested early on where I likely have gotten the love and desire to follow similar foot steps.I have taken last 6 months to educate myself and currently own a single family home as primary residence and would like to expand to multi family properties (2-4 units) for additional stream of income, not to mention potential tax benefits for long-term investing.Based on current living situation, I have a fair amount of equity established in my primary residency along with having enough cash to either pay off house completely or use towards investing in a multi family property.Given that I'm the sole source of income for our household with my wife being the home maker for our two kids under 2, trying to weigh out risks with getting started now or perhaps waiting. 

Here are some key takeaways and areas I’m curious to hear others’ thoughts on:- Two of our projects have maxed out on rental income and are now ready for an exit.

At that time, my friend encouraged me to get into real estate with the idea of creating passive income and wealth in future (via appreciation).

And for the evidence, I would guess that they'll want to see some evidence of the income from the rental days.

For me as well as the seller.First, you have to define Sub to financing.Do you mean the reckless kind where you overpay for a property, take over the financing and borrow from others to cover closing costs and holding costs when you have no money, no credit, no income, no reserves and can't tell a warranty deed from a deed of trust and you close on the kitchen counteror do you meanbuying below market value, already having a nice income, having reserves, using escrow and title, already understanding the due on sale clause, have done a lot of creative purchases and know when to use and when not to use creative finance and how to recover if something goes amiss?