If you're holding a house in Miami-Dade or Broward that you don't want to list the traditional way, you're probably dealing with more than a simple sale. It may be an inherited property with multiple heirs. It may have an old roof that scares off financed buyers. It may have HOA issues, open permits, liens, tenant problems, storm damage, or a deadline tied to probate, foreclosure, or relocation. That's where homeowners start asking a practical question. What is a cash offer on a house, really, and when…