Both units are vacant now and issues are starting to develop from being vacant.

The renovation could cost tens of thousands of dollars or maybe there is a foundation issue they're not telling you about.

Typically, you would have a pest control service visit every 2-3 months, but this can vary depending on the region and the specific issues you're dealing with.

This has been an issue for over a year.

I'm still not understanding the issue.

Of course, easier said then done, and evictions and issues/extra expenses pop up, but if you keep the long term vision, it tends to build on itself quite nicely.

No issues with any lawsuits.Good luck!

Address the issues as they come.  

So, because of this a lot of the "affordable" condos you will see in DFW have financial issues and you cannot get a mortgage loan on them, and have to pay cash. or, maybe get some sort of non conventional financing that is much more expensive requiring 25%+ down. 

Be sure to fully disclose your role in the transaction, and consulting a local real estate attorney is highly recommended to avoid any compliance issues.