Its typically triggered by a third party, so until someone wants to complain, there is no ADA compliance police wandering around giving citations.

Usually this triggers eviction.

This tax change could trigger even with offering contacts for those services as it could be construed as contractors.

Don't over think this, pull the trigger actions create results. 

With regard to renovations, I always suggest taking incremental steps to bigger renovations or partnering with someone who has already done a renovation at that level.I've been known to just go for the big rehabs for my personal investments here in Chicago , and during that process, it's always more stressful than it needs to be...As far as navigating the competition, I've found the best thing I can do is get EXTREMELY CLEAR  on what I am looking for; then I am confident pulling the trigger quicky. 

Very few people operate their LLC correctly and therfore this just gives them a flase sense of security.Moving into a LLC can also trigger the due on sale clause.

But if they don't willingly make the payment your only option would be to sue, and they have the upper hand to let the lender know about the sale possibly triggering DOS.

BUT I have also heard that it could trigger a due on sales clause, bringing the note fully due at any moment.

You would only pay taxes on all passive investments in a traditional SDIRA at distribution, unless you have a mortgage, then the portion of the income derived because of the mortgage will be subject to UDFI (unrelated debt finance income) which will trigger UBIT (unrelated business income tax). 

If the $700K sales price is not used correctly to acquire qualified real estate, the exchange could fail, triggering tax liability.Future exchanges will depend on the total value of the replacement property acquired, so entering syndications could limit flexibility.