For MN PreLien requirements, "If the property is wholly commercial (and not agricultural) and one of the following situations applies, the job is exempt from notice requirements: (a) the job is to provide or add more than 5,000 total usable square feet of floor space; or" Does this line refer to new construction? So do I need to provide a prelien to a GC where I am a subcontractor working on a NON AG multi-use commercial property or wholly residential commercial property (apartment)?