In the event of destruction in whole or in part of the property, Tenant/Buyer shall have the option to proceed with the closing and accept the insurance proceeds for said damage, or to declare this agreement null and void, releasing both parties from any obligations hereunder, except for the return of monies paid by Tenant/Buyer which shall become immediately due and payable from the insurance proceeds.See a lawyer please.

Perhaps the easiest way to avoid FIRPTA withholding is by making sure you do 1031 exchanges whenever you sell,  the  non-recognition of gain offered by the 1031 releases you from the requirements of FIRPTA.  

Actual, 3/4", nailed in place hardwood can last many decades and be refinished a dozen times.I have used thru-body porcelain in wet areas.  

A real estate firm cannot release the earnest money unless the seller signs the proper form to release it per real estate commission rules. 

We have a procedure for adding or releasing tenants from the rental agreement.

The bulletproofing I have done:Replace vinyl flooring with thru-body porcelain;New plumbing.  

Unless the owner signed something releasing the OP from the original purchase contract for the assignment, the purchase agreement survives the closing, and the OP is still the one who was in contract with the seller, jointly with the assignee/end buyer.

In my experience, they will usually require something in writing from the applicant authorizing them to release this information.

So after close if the unit is trashed and damages and lost rent are occurred within a specified time frame then that money is released to the buyers post-closing ( you estimate maximum rent lost, eviction costs, and possible damage to the units as the hold back figure) .

The way you get accurate data is to get an "authorization to release information" signed  by the borrower.