If you message me I can send you the contact information for an attorney in Mpls who partnered to write the MNvest legislation. 

TEK - You can try to enforce the provisions of the lease with the moving tenant, but you are better off compromising to save your legal costs, because you WILL win in court and you will pay more to collect the judgment than it is worth.  

Mike Capuano (D-Mass.) said, calling the bill "irredeemable" and "dead on arrival" in the Senate.The CHOICE Act also places major restraints on the Consumer Financial Protection Bureau (CFPB), an agency created by Dodd-Frank that the GOP has long called unaccountable, abusive and redundant.The bill renames the CFPB the Consumer Law Enforcement Agency, and reduces its power to enforce pre-existing consumer protection laws.

You can very easily end up deep into negative cash flow if as a social worker you show any compassion for a tenants personal situation.This is a business that depends on enforcing a lease without exception and putting tenants on the street when necessary.

In the unfortunate event if I have to go to court to enforce the contract, would a judge rule that this wording is too unfair to the seller?

In some areas, code enforcement has bigger fish to fry than an existing unpermitted addition, as long as it is not obviously a zoning violation, there are no life safety issues, and the neighbors haven't complained.  

Have you come across a property that you have won the bid on, to only find out their are other liens on it such as code enforcement, hospitals, utilities, etc.?

Eventually, we'll start to see international codes adopted and enforced.

Law enforcement would literally need to be part of the transaction to observe it in real time.

If it's in the lease that they've signed, why can you not enforce payments?