So I studied and studied but didn't get going until I found a way to join REI with social responsibility.For me that means owning affording senior housing: assisted living units someone living only on social security could afford.Not the bigger bucks I could earn by owning expensive AL, but now I am excited and making things happen.

From the current FNME Selling Guide.If the mortgage being delivered to Fannie Mae is secured by the borrower’s principal residence, there are no limitations on the number of properties that the borrower can currently be financing.  

If the answer is no - for safety & security reasons, not just because you are too snooty - then maybe the property isn't for you (or at least wouldn't be for me).

John -- why would you want to buy bonds that carry "political risk" when you can invest in Notes that earn 8% to 15% per year, and they're secured by a first lien on the real estate itself?  

You will probably need two documents: a Promissory Note which describes the terms of the loan and a Mortgage which is filed with the County clerk to secure your lender's interest in the property and which will allow them to sell it if you fail to make the payments.

The TRID Rule combines four existing disclosures that are required under the Truth-in-Lending-Act (TILA) and the Real Estate Settlement Procedures Act (RESPA) for most real property-secured closed-end credit transactions.

Would you be interested in helping me secure a tower/lease?

They are more concerned about financial security and they generally have income to invest in themselves if they must to advance.

What are the barriers to the security?

There are certain techniques and strategies needed to do well in these areas, but I would only use this vehicle for a short term investment (3 to 5 years)!