@Gil Ganz there are three more effective strategies for someone in your position who wants to "be the bank":
1. Lease option. Lease option is also a purchase program, but the tenant can choose to not exercise the option and walk away. You said you do not want someone to walk away, but in a lease option you don't care. In fact it is often more profitable if people do walk away. You get a down payment, plus a couple years worth of payments and you get a property back that has increased in value. You find the next lease option and do it again.
2. Hard money lender. You don't acquire the property, the term is shorter and the interest rate is higher. These arrangements are front end loaded with prepaids. If you want to be a lender, this will get you higher return. It is very easy to find deals to invest in and it doesn't involve having to acquire properties.
3. Invest in under performing notes. You get the note at a discount. You may need to foreclose, but often you can turn the situation around.
The problem I see with your BFF (Buy Flip Finance) strategy is that it depends on someone keeping a loan for 30 years to make your money. There are several things that can go wrong:
1. You are lending to people who can't get loans from banks. Banks are experts at risk management, which means only higher risk people are borrowing from you. High risk means higher opportunity for default. It could be a costly process to get the property back, which means you better have profit on the front end, either through purchase equity, down payment or points.
2. If someone is qualified, but got rejected from the bank due to a minor issue, odds are good that issue will correct over time. The first opportunity they get, they will refinance out of your high interest loan. You get two years worth of payments and they pay off the loan. Now you have your cash and you need to find a new property. Not the end of the world, but how much money did you really make in those couple years?
3. Even if situation 1 or 2 doesn't apply, the reality is that people don't live in houses for 30 years. Even more true for less expensive starter homes. In this situation, they will be out in 5 years give or take. Similar to my other two points, how do you make sure that profit is made in those first few years.
How can your strategy work better? Make sure you load profits up front. I am talking making money on the acquisition, non refundable deposit, points at closing, etc. You need that to cover risk and you need to ensure you get some type of return on the investment. If people default, it will take some money to fix up the house after you get it back.
Now on to the better strategy...
@Joe Villeneuve made a valid point. Using leverage will compound your return. You can generally leverage at a ratio of 4 or 5 to equivalent cash purchases - more if you are really good. In other words with 25% down, you can by 4 properties and with 20% down you could buy 5 properties versus an all cash purchase.
Lets compare leverage to all cash and making money from financing:
Option 1: Buy one property for cash and finance it to a buyer. Over 30 years you get X% annual return on that cash. At the end of 30 years, you have your original cash plus the annual X% return. The problem is due to inflation, your effective return decreased over time. Unlike a savings account, which is compounding (interest on interest), a loan is fixed on only principal. You can reinvest your interest and principal as you get paid, but strictly off the loan the return is very limited. To illustrate this, if you invested $100,000 in a savings account at 2%, after 30 years you would have over $180,000. If you loaned someone $100,000 at 4% over 30 years, they would repay $177,000.
Option 2: You buy four properties with leverage and rent them out. Over 30 years you get monthly cash flow and your tenant pays your mortgage. At the end of 30 years you own the properties at their appreciated value. You also received annual return via cash flow and thanks to appreciation in rents, the cash flow increases annually inflation adjusted. In addition to cash flow, you can access equity on all four properties at any time over the 30 years, through cash our refinance or an equity line of credit.
We can play with the numbers and run scenarios, but in every reasonable scenario, option 2 will return significantly more money. That is the power of leverage.
Great discussion thread and thanks for letting us all try to poke holes in your plans.