Th oewner of the property is an LLC, they hired us to provide siding works. In the end they didn't pay in full. We wanted to file a mechanics lien against the LLC. Please, correct me if I'm worng. We have 6 months for that and first we need to send a notice of intent, than we need to serve an affidavit of notice within 20 days, and than we can file a lien within the same period. What would be a propriate affidavit of service of notice - registered mail or service by Sheriff? Thanks