Well I recently bought a HUD home and knew it had a leak in the roof due to the evidence in the corner of the master bedroom. Big storms last night and now I know where it is…The roof was poorly designed and the leak is coming in from a gulley. Instead of the gulley running straight off of the roof it hits some siding about 10 inches from the edge which during heavy rain causes the water to not run off quick enough. I think this causes the water to run up over the flashing under the siding and then down the corner of the master bedroom. (which is rotted due to the constant water during rain storms) My ? is how hard of a fix is this usually and whats a very rough fair price range to expect. I have a contractor coming out to look at it Thursday but wanted to get a few ideas on what they are going to do to repair it and cost wise. Thanks for the help!!!