Thanks @Sean Sloop Would you be willing to share a version of the offer letter that you used that was accepted right away on your second deal?

I believe the documents, approval letter/POF, and Earnest Money have to be delivered to the listing Broker within 48 hours or two business days.

Just send a formal looking letter or email telling them they are going to have to start paying their own utilities when they sign a new lease.

Many communities have the right of first refusal on the sale of a home that can also block you even in states where they might not be able to block you paying back rent.In addition to those worries is the worry of back taxes.There is also the issue of if a lender is involved.

I sent them paperwork showing this was a disregarded entity for about 3 years in a row when they sent me letter.

You can always send them a letter, but that seems inefficient to me. 

The house might actually be a bit of a one-off but not in a good way: it's a rancher without a basement or usable attic, and it's concrete/cinder block construction.

This will tell you what the landlord pays Before you close you will need an estoppel letter signed by the owner and tenants saying the leases are correct.

Pete 5 blocks can be the difference between a war zone and a beautiful neighborhood. 

The people at the local hardware store where I usually buy my paint have recommended the Zinsser B.I.N. saying its the only primer that will block the nicotine stain, and as you stated it is very expensive.