Legal Question in Real Estate Law in Arizona

Generally, no. If the fence was constructed by you and is located completely within your property boundaries and there is no existing fence line or agreement to the contrary, the fence is your property. However, if applicable, I would investigate as to whether the fence was paid for by both property owners at the time, or whether there was some form of joint maintenance agreement. It is usually better to talk with your neighbor about such things first before taking any additional action.