If you were able to close on time the contract would have prevented her form selling it to someone else.  

Here's one reason for rejecting an eviction: "The registration law prevents a landlord from evicting you if the building is not properly registered.

Wanna hold title to prevent my lender seeing the transaction (not to call the loan due)2.

After running a background check through a Private Investigator ($150) we found all sorts of things that would have prevented me from leasing to him. 

I can't imagine any laws that would prevent stating your interest in purchasing the property.

To prevent overcrowding and undue stress on plumbing and other building systems, we restrict the number of people who may reside in an apartment/home.

Funds from your prior employer-sponsored 401k could be rolled over tax-free to your new Solo 401k plan, preventing them from getting a haircut due to taxes and penalties on early withdrawal.

I just call it how I see it, licensure laws are not there to protect anyone but the ingrained institutions who paid to have them passed.Hotel regs prevent competition with airbnb, taxi regs with uber, ...

It's always amazing to me how they like to keep the fee logic so clandestine in most of the major sites just to prevent people from asking too many questions!  

I am sure they would love to act in a preventative way to keep people that hoard safe...imagine trying to rescue someone in that situation!