Help--questions to ask a contractor

[Tracie Davis]

My tenant called, an outside facing wall is damp. I've googled and the best info I can find is that the water source is either from rising water, condensation, or penetration. I have a home improvement guy coming out tomorrow to take a look. What kinds of questions should I ask? What type of things should I be looking for? Any advice that will make this quicker/easier to fix? Thanks, Tracie