4 posts , 4 support boards around top and a tarp as roof. Survey done by a registered surveyor to clarify boundary. He said my current chainlink fence was on his property but in actuallality his structure is on my property and is preventing the full completion of a fence planned along the property line. I have sent a certified letter to him with copy of survey showing encroachment and he does not seem to be interested in picking up letter or having it redelivered. After checking tracking information it shows a notice was left but he has made no attempt to get the letter. Can I just take it down? It is about 1.5 ft from my shed and is clearly on my property and the structure is degrading with a chance of collapse against my shed,fence and land furthermore.