my brother in law is not licensed (we found out later) and he did some work on our house last year. We had a verbal agreement for work to be done and an estimate of $20,000 and 4 weeks (we paid close to this amount already now he wants another $20,000 plus). We paid about half of the hours he invoiced before we realized he was drinking and destroying our house. We then got him to leave under threat of calling the cops. It took several more months for us to be able to live in our house. He has now sent us a letter stating that he will put a mechanics lien on our property if we do not pay the remaining unpaid hours. We had to tear out all of the work he did and have it redone as it was unsafe and done badly. Can he really put a lien on our house without a contract (he would never give us one) and without a license? We have photo documentation of the state the house was left in and we also have a letter from the electrician stating that the work that was done was unsafe and would have caused a fire. I am asking the plumber to give us a letter as well for all of the work that had to be redone.