They can't force there way into the property. However, they can just file a lien against the property and not give their OK when you attempt to sell the property. then your stuck and will have to deal with it then. Better to do so now and get the matter resolved and not infuriate the powers that be and give them fuel to make your plight even worse.
I don't know what the problems are or what they would cost to fix. To be honest with you - your best bet might very well be talking to the municipalities building inspector who can give you great advice on the subject - they would certainly have a clue.
Most certainly I would ask around before I spent even $8,000.00 for a 3rd opinion.
Most certainly, I would talk to the building inspector and see what their opinion about what can be done and what can't be done. Get on his good side and correct the problems). Make the building inspector seem like an expert and stroke him some - he will become your friend in the matter and even help you.
Attorney
19 years legal practitioner: real estate, collections, estate, civil, business, and criminal law