[header] How to file a lien [title] Exhaust all other options. [step] Filing a lien is a public declaration that someone hasn't paid for contract work, and is a strong legal move to make. Before you jump straight to the decision that you want to file a lien, talk to the property owner and attempt to set up another plan. 
[substeps] Be clear from the beginning of a job that you'll file a lien if debts remain unpaid. Some states such as washington have forms you can use to notify property owners of your right to file a lien if you aren't paid.