My house is 31 years old and the backyard fence needs to be replaced because it's falling apart. I live within city limits. None of my backyard neighbors want to cooperate financially for the replacement of it because they say they have no money. I am willing to do all the work by myself, but I don't think it's fair that I pay for it entirely while they also get a new fence. What can I do to make them pay for their part? Thank you so much for your help.