If asbestos is present and poses a risk, a tenant could, among other things, legally force the landlord to choose between removing the asbestos or losing rent. 

If its Ayurveda she is after, she can live in India and get a 4 year degree with a fraction of your projected $240k.Please don't let a university make money of your wife's passion, especially when ot may not be a legal requirement to have such a degree.

Mary Kenworthy @ Stephanie Clark - REMAX Alliance = Property Management, Cole Fackler Rose & Womble = Agent, Hanger Law = Legal Support

I concur with the others; find a good landlord/tenant attorney that can help you plan your legal recourse and act quickly.Hopefully, next time around you'll find a better tenant. 

A lot of forum members are experts in their respective fields related to real estate investing, whether that is real estate sales, wholesaling, flipping, buy and hold investing, lending, self-directed IRA and Solo 401k investing, or tax and legal guidance.There are some pretty nice discounts on many products and services offered as Perks to BP members that you might want to check out: https://www.biggerpockets.com/perks/proIf you haven’t been to it already, the Bigger Pockets blog features links to their fantastic podcast and many great articles: https://www.biggerpockets.com/renewsblog/The site has quite a few tools that can be helpful for new members.

Do not rely on it for legal advice.

I am looking to see if there is anything I can do from my (buyers) stand point to hold sellers accountable for this mess. 

In my opinion--I don't think they have a leg to stand on because the second dog was not legally an ESA (and probably still is not) when they applied for the unit given that the letter was expired.

Operating expenses are anything it takes to run the property:  taxes, insurance, landscaping, utilities, repairs, legal fees, marketing fees, etc.  

@Chaim KernkrautUnless you are a real estate investor with more than 10 years of experience, a team of contractors, legal aides and RE agents who have done deals with you for the same amount of years, I would suggest you take a weekend trip to see the property at least once.