There are prohibited people that the IRA can not do business with.

Some SDIRA custodians may have restrictions or specific processes for taking distributions.Prohibited Transactions: The IRS prohibits certain transactions within an IRA, and engaging in these transactions can result in penalties.

However I agree with the others that pass on this specific amenity as it is a liability and maintenance prohibitive.

Prohibited parties are spouse, child and their spouse, and parents.

Add to that increases in food costs, energy costs, and what seems as excessive travel, it may well prohibit renters from buying.3. 

You are correct, Boston's property values are going to prohibit cash flow.

The problem is that BiggerPockets rules prohibit us from offering our services to you.Browse this forum, see who answer questions and how, and then you will see who you want to contact.Maybe these posts would provide some background: https://www.biggerpockets.com/forums/51/topics/998718-explai... and https://www.biggerpockets.com/forums/51/topics/1088325-expla...

All the usual Lease prohibitions against running a business do not apply.

The issue with a mobile home is (due to accessibility) these inefficiencies would be cost prohibitive to remedy.Most of my installs either FAU or HP are all dual zone.

Wise or unwise, the climate is not prohibitive except fully rain exposed.