I structure my deals with a down payment, and they carry back at 6% interest only with a 5 year balloon.  

You have honored the letter and spirit of your rental agreement by promptly sending repairmen and ordering new appliances as soon as you were advised to do so. 

I'm like, I don't do walkthroughs with tenants (thinking to myself, especially tenants like this...) and that if the house is in the same condition as it was rented in and utilities are closed out, he'll get his full deposit back.He then has his fiance start hitting me with a barrage of letters they are texting me about their move out date.

This is a good question since I do not want to commit mortgage fraud - my plan was to list it for rent around 90-120 day mark and file a work relocation letter with my issuer letting them know my employment situation has changed to a new location.

I bought for $10,000 down and pay $1,000 a month to the seller with a balloon payment of balance by end of year one.

If you plan on starting slowly with handwritten letters, it's pretty easy to manage and you can use a free CRM like HubSpot just fine.

Furthermore, when putting in offers on houses, having numerous prequalification letters might give you more negotiation leverage.

If the money warrants action, send a demand letter. 

. $200; I don't see a "Closing Protection Letter"  or "Abstract" in all of the quotes).Two varying examples below:

I'm not sure if there is such a deal structure or even the risks involved if engineered,  but the idea would be that the title doesn't really transfer / and a final balloon payment isn't made until after the property actually transfers to the children.