At the bottom line, each party gets a number (seller = proceeds and buyer = money he needs to bring in).However, if it is a condo, you need to have something in the PSA asking for a copy of the HOA payment coupon, along with any leases, insurance declaration, recent utility bills, yadda-yadda.If buyer just accepted that HOAs are $x/month without any documentation, I don't see where an estoppel (usually between landlord and tenant) would help - HOA dues are something he/his broker should've gotten a copy of as an operating expense.Now if the seller lied and there is written evidence, he'd have a better case.

It states they had it with conditions, but again the ownership changed and I do not believe new ownership even has a copy of our old lease.

I've been cruising the forums for a couple months, reading everyone's experiences and wonderful advice that's always freely given. 

Reach out to me and I'll be happy to send you a copy!

They have pdf copies of the same legal notices you would find in the paper. 

At this point he started to email me and copy random people from various city, state, and county governments.

I might ask them to send a copy of the the contract or something to prove they are actually purchasing a new home.

As the owner I receive a copy of the water sewer garbage bill.  

Assuming you're buying it as a turnkey investment property to hold for awhile...Pros: Instant cash-flowEliminates immediate expense of finding a new tenantCons (w/ ways to overcome):May have lots of deferred maintenance (be sure to get copies of invoices for big repairs already completed and a list of any open maintenance requests)May be below market rent rate (check the current lease and see when/if you can bump the rents up and put that in your calculationsA lot of my clients like the turnkey route.

When would I do that, and would I need a copy of the current tenant's lease?