Bottom line for everyone is that there are so few audited let alone disqualified that it is hard to extrapolate very far at all. 

In the event of an audit, the IRS would view that friend as a "straw buyer" and still see the underlying transaction as between the IRA and the IRA account holder. 

Your insurance company will usually give you free audits.  

I was audited and IRS said I owed them high 6 figures in taxes for 79 and 80.

Contractors could have individual codes too so you have an audit of who opened the door and when.

Each state has a Division of Real Estate who oversees broker operations & requires broker's to adhere to incredibly strict accounting procedures, audits and care of all of this money that flows in & out of their hands that is that of the client's (you) or the tenant's.

You can see if H&R Block still has something they used to call “audit protection” or insurance or some such.

Documentation will be crucial in the event of any tax audits or inquiries.

Yes, it is like auditors and many of the auditing companies do this.

(You might even have them do the make ready so you have an impartial set of receipts.)Ps.