We were hired as a Sub-Sub Contractor to do all the final cleaning for a New Hospital built in Kingsport Tn. The Contractor went though a company called Core Construction Cleaning LLC out of Las Vegas. This Las Vegas Company found us and then hired us to provide the cleaning. There has been no payment and no communication since the work was complete. They will not answer emails or telephone calls. Would I start with the $49.00 notice? Should the notice be sent to the Contractor, Sub Contractor and the Owner of the Hospital at the property owner as well? If the notice should be sent to the Hospital Owner, is it absolutely necessary to include the legal description of the property in the notice? If so, how do I obtain that information?