We are a landscaping company that serviced an individual homeowner as part of a courtesy to our regular customer, his HOA. His home is for sale and he has moved to another city. Can we file a lien against his home for services rendered? If we can and do, does he have a case to sue us if we stop a sale of his home? We have invoiced, emailed, left voice messages and sent a certified letter indicating we would file a lien if he did not communicate regarding payment.