I live in California and currently we have found out that our Contractor has not paid the subcontractor who installed a new HVAC system on my home. The research I have found for California law shows that the subcontractor can only put a mechanics lein on my home IF he provided a preliminary notice to us, the homeowner, and the Contractor. No preliminary notice was ever provided. Can a lein be put onour home without the preliminary notice? Also, is there any other ways the Subcontractor can sue us, the homeowner when trying to go after the contractor for payment?