If I do lein a property what could the owner come back on me with trying not to pay what is owed
There are a variety of arguments or defenses that an owner could have including breach of contract, poorly done work, inadequate or incorrect materials or methods, negligence, willful misconduct, or even their own bankruptcy. It would be fact dependent, but I am happy to discuss your situation and have a brief discussion regarding your risk of moving forward with filing a lien if you would like.