Prospective buyers may be deterred because of the delay caused by the park’s right of first of refusal could range up to 10 days.

That’s causing the moisture on the first floor.

Keep it up, 'cause it will really help you get started!

As for the septic that could cause unique proportys in a rental, if your tennent doesnt know better they could really mess it up flushing things that dont degrade or kill the bacteria in the system by dumping household chemicals down the drain. 

What about a property could cause this financing to fall through?

Changing them midstream could cause a fair housing complaint.

Turnkey companies that have experience and a good track record should never warranty tenant caused damage.

I was thinking of asking for a key or having the unit owner sign a document releasing me from any liability or damage that is caused by my inability to access the utility room.  

Many foundation problems have water as a root cause - be that infiltration in a crawl space, drainage around the site, cracked sewer line or water line.

The big hole abt 32 inches deep is the sump pump which may have caused the cracking to the foundation outside.