They were also just hit wit a 10 billion dollar lawsuit from insurance giant AIG.

As a Realtor in that market, I've witnessed incredible gains by clients & you definitely have some options.

Looking for legal reasons to reject applicants is only going to lead to accusations of violations of their rights.

**I don't think I can link to that here without being accused of advertising, so if you haven't seen it already I'd be happy to shoot it over to you (or anyone else) in a PM.

But from what i just witness this is not the place to get them answered.

Based on OP's facts this deal should not have gotten this far.Estoppels are not promises, they are attestations - that is why they are signed and witnessed.  

(my mom is a Vietnamese immigrant---before any accusations of racism start flying around) When they spoke, according to my kid, the 2 Spanish woman joked and laughed and then told my mom they've been renting for 10 years with no complaints...so sorry.  

I’ve read most of your comments and it seems that everyone has miss read the question or is accusing the buyer of having a motive of not purchasing the property... no one has yet to offer true advice. 

All our workers have a master key to all of our properties, however, I prefer to have the tenants be there when someone comes in because they will always accuse you of stealing their lap top, Rolex Watch, and the $10,000.00 they have in a sock in their drawer. 

Piecing it together from notes entered in the PM portal, it seems the tenant on the first floor had two break ins, and complained about the second floor unit being too noisy (accused them of running a day care, but not sure if that is substantiated).