May I legally put up a trellis across the top of a fence sharedwith a neighbor?

May I place a trellis across the top of a fence that is shared by a neighbor and attach it on my own side? The fence was in place when we moved in about 25 years ago. The neighbor has been in residence about six years. I have already tried to put this up and the neighbor came out and said take this crap down from my fence or I will do it my self.

Asked on March 6, 2012 under Real Estate Law, California


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