Sorry about being late to the tread and the conversation has moved in a different direction from when it started.There have been a number of good insights and useful inputs you have already received but a couple of points;- You are clearly NOT buying this for cash flow as the NNN is virtually $ for $ the same as your mortgage payments.

There seems to be many different points being made on this tread.

If their intended use could cause delays for the closing tread carefully.3.

Tread carefully. 

Unless you are familiar with the areas , I would tread lightly .   

Syed Rizvi I would tread carefully.

Tread very lightly!!

Regardless of whatever you do with the security deposit, you do have to make sure that it is available to refund to the tenants upon completion of the leasing contract.I would tread lightly when it comes to security deposits though... as there are civil penalties (and potentially criminal) if you violate your fiduciary responsibilities.

If presented with this situation, I would formally ask my insurance carrier if there was an exception for service or ESA animals.Here is a case where a landlord was prosecuted for refusing an ESA animal (however, no breed was brought up, so this is a little different):https://archives.hud.gov/news/2015/pr15-050.cfm My advice is to tread carefully. 

It seems to be treading water which is better than most of rural America.