In reviewing the info posted on this site, it specifies "general contractor" and "subcontractor", but I am not licensed as either. In WA you must select the type of construction you will be performing, and then you are licensed as that specific contractor. There are different requirements and fees to become a "general contractor." As a Concrete Contractor, what steps do I take to file a mechanic's lien? I did not file a preliminary notice at the brginning of this project; I had a contract signed by the homeowner.