I had a demolition contract with “Company A.” I paid the contractor in full. Project was completed as contracted. A bulldozer was required to be used. Company A’s father (who owns Company B for which I had no contract) already had a rented bulldozer for another project. So, it was used to do my project. Company A did not sign a lease for the bulldozer. I did not sign a contract for company B. I doubt Company A officially sub contracted Company B (as they are father and son with separate demolition companies) Bulldozer was picked up by leasing company at my property where the is a company A sign in the yard. Apparently, Company B has not paid the equipment rental lease. I received a letter threatening a lien on my property. Can they legally place a lien?