Our Charity was  ( aheroshome.org)  BP members and BP staff giving back.Hope this gives you some Ideas..

You'll probably need to look at a few to get a general idea of what a room would rent for in your area.

Finding a place within 5-10 minutes of Barnes, STLCOP, Wash U, etc seems to be a great idea.   

It’s a good idea to review local real estate development compensation norms or even consult with a lawyer to ensure the deal is fair.In your uncle’s case, the terms seem fairly favorable to the engineer if he is only handling the development and not contributing any capital.

Buyer would go steal from other houses to fix this one.. they never bought the house .. the idea for these guys is they would get enough on the down payment to at least get their cash back..

If you don't have much money, then invest your time and energy.Putting a second mortgage on your home to buy a turnkey property is a horrible idea.

Check out too this 12-part series published here on BP on the topic, hope it helps!

Quote from @Miguel Del Mazo: Thank you for the discussion @Corby Goade .I feel like we are biting off big pieces of a complex topic, and I think it would be helpful to focus on either the interests of the property owner or the MTR operator to simplify things,I think your greater objection to MTR arbitrage lies with why a property owner would want to willlingly enter into the agreement, so I will focus my reply on that. 

You’ll be in a better selling season and you’ll have a better idea of where interest rates will be at the end of 2025.

I had a few houses that lost about 30k in equity overnight in the area (had been considering selling to do a 1031 into some new builds, but that turned into a less attractive idea after the equity drop).