A mechanic's lien is a legal claim against a property that ensures payment for work performed or materials supplied during construction or renovation. If a contractor, subcontractor, or supplier is not paid, they can file this lien to secure their right to receive payment, which can ultimately affect the property's title. When a mechanic's lien is filed, it creates a public record that can hinder the property owner's ability to sell or refinance the property until the debt is settled. This process helps protect the rights of those who contribute to a construction project, ensuring they are compensated for their services.