Go up to the peak with a leaf blower and see how much of that mess will simply blow away. I came up to a house a few weeks ago and it looked pretty bad, to the point where my initial thought was to pass on it. But I figured I drove out here, let me do my due diligence. I discovered that half the stuff blew right off without leaving any damage behind. If it's really as bad as it looks from the ground, then yes, I'd say pass. But it may not be anywhere near that bad.