This will alert the owner that he/she is being fined and he/she will most likely take action to prevent multiple fines.

If the appearance of being in an LLC prevents one law suit it is well worth the cost but it may not ever prevent a law suit. 

Adequate heating is essential for comfort and to prevent moisture-related issues.3.

Make sure you have a detailed scope of work signed by the contractor to prevent disputes.

I would also consider the possibility of raising the property as well to prevent further flood damage. 

How are they incentivized to prevent move-outs? 

I'm not trying to prevent him from making money as much money as he can, but something seems off with such an arrangement, that primarily results in him effectively keeping 67.5% on most deals.

These forms provide a written confirmation of the terms of the oral rental agreement and help prevent misunderstandings or disputes down the line.By having tenants sign estoppel forms, you can verify important details such as rental amounts, deposit amounts, and any additional agreements or responsibilities.

An experienced realtor can forsee and prevent problems too.  

It's not foolproof but it certainly helps preventing us from getting ripped off.