A construction lien, otherwise known as a mechanic’s lien, gives builders, contractors and suppliers legal a way to get paid for their work and any materials or supplies they purchase for a project. Under Chapter 713 of the Florida statutes, only contractors and other professionals, such as interior designers, architects, engineers, sub-contractors, suppliers and mappers, may place a lien on properties they improve.  If the lien is valid, properly filed, and remains unpaid, it can be foreclosed against the property.  Not everyone who improves a property is entitled to a construction lien.  Unlicensed contractors, contractors working on government property, and contractors working on properly bonded properties, for example, are generally not entitled to construction liens.