Hi Maria! There are a number of factors to consider when filing a Louisiana lien, so I think the following two resources will be a great place to learn: (1) How to File a Louisiana Mechanics Lien – Step by Step Guide to Get You Paid; and (2) Louisiana Mechanics Lien Guide and FAQs.
If you have additional questions about what's required or how to file a lien in Louisiana, feel free to follow up with additional questions!