My neighbour is putting in a garden shed (10x10 it looks like) right close to the property line. I'm not sure if he's within code on that and don't really care to much but I see the trusses are now going up now and the slope is to my property. The truss ends are very close to the property line. Should I be concerned about the amount of rain fall diverted over into my property? He can't speak one word of Engrish, I'd like to know if he's putting eves on.