I have a neighbor behind me that's truly a PITA. When I came home from work today, I find out from my wife that some surveyors were out pounding stakes around the perimeter of his property. The guy is going to be putting up a fence. Fine. The problem is that I have a drainage issue that requires me to raise my backyard. The neighbor's fence is to run paralel to my rear property line, but the line is at the lowest point of the yard--exactly where I need to trench to lay my footer for a retaining wall. The neighbor won't budge on moving the fence towards his house by a mere 12", but then again it's the property line. Here's the real kicker. The retaining wall will need to be built with a set-back vs. a vertical face. Even if I was to build a wall, my backyard would be too shallow (front to back) to meet code. What to do?