When going to see a property for the first time, what is on your checklist to look at/test to get a quick idea of rehab needed? References to forums and podcasts welcome!

Take a friendly contractor with you or a friendly home inspector or a well know real estate agent that is a top producer in their firm. All these people can help you with what would be the approach and needed rehab for cost savings and getting a quick sale and giving you advice so that you don't over spend on items not necessary that would be over the top for that neighborhood.