Should close by March 31 and so no notices filed yet. 

Usually $25/month more in the second year, another $25 in the third year, and then it coasts there, but each side can decline to renew after the third by giving 90 day notice. 

You would have a better chance of proving the seller knew something they didn't disclose.What type of "structural issues" were found and why didn't you notice them?

On Airbnb, with a strict cancellation policy, a guest can cancel (with 7 days notice) and receive a 50% refund of rent and 100% refund of cleaning fees.

Once many of these buildings are complete in the next 1-2 years, there should be a noticeable increase in the supply of rental housing.

But I'd also put the tenant on notice that they're ultimately responsible for that cost. 

He came in and outshined the other contractors by climbing up in the ceiling and noticing all the little problem areas and not to mention the decent estimate.

Advise that at the conclusion of their lease (or if they are on month-to-month, give notice that you are not renewing) that the property will be rented for a minimum term of (whatever), under a new lease agreement, and that the rent price will change. 

From what I've noticed, you really have to MAKE deals in the DFW area.

As far as the anti social and taking risks aspects, if you become confident in something (investing) those issues tend to go away, I can talk someones ear off and make no sense, but since I know a little bit more about investing, I've noticed people start to listen more when I talk about it.