unwanted tennent

NY> I own a business and was going to sell it to a person. We had a verbal
> agreement and nothing in writing. He moved equipment inside the building I
> own and since then the sale was cancel.
> My question is I am liable for his equipment still in my building in case
> anything happens like a fire?? If so, can I write a waiver form stating he
> relinguish all rights to any claim against me and has his equipment in my
> building at his own risk. will this be legal if he signs it???
> Thank you for all you time

I don't understand. Why are you worrying about who's liable for his equipment inside a property that he is no longer going to buy? Why are you allowing him to store his stuff in there? Give him written notice to remove that equipment immediately, and if not removed within 30 days, the equipment will be confiscated and sold to pay the storage fees that I certainly hope you are charging him! Send this notice to him by certified mail, return receipt requested. This is commercial property and does not fall under residential LL-Tenant law.