Re: Can a Township Pass Ordinaces Denying You Rights to Your Property
I'm not going to address what landsurveyor has as he has explained things much better than I could anyway. I would like to address a few of the other things you mentioned.
the old tree: if it is diseased, dying, or dead, you need to send a certified letter to your neighbor alerting them to the condition. Once they are put on notice of the condition of the tree, they need to remedy the situation or expect to be held liable for and damage it causes others.
to the fence: arguing a property line without a current survey is not practical. Once you know and can prove where the property line is, you can deal with the fence on your property. The problem you might come across is if the fence has been there long enough to be granted a prescriptive easement, if the neighbor wishes to fight the issue, they may be allowed to leave the fence where it is.
to the borough taking your property (the alley): I do not see who holds the easement. If the neighbor, the borough has no right to take anything unless you are compensated for it BUT the neighbor would have whatever rights afforded by the grant. If the borough is already owns the easement, they do not need your permission nor do they have to give you notice about taking action on the alley. Chances are you would be notified in some way before anything was done though but no promises.
I am not an attorney and any advice is not to be construed as legal advice. You might even want to ignore my advice. Actually, there are plenty of real attorneys that you might want to ignore as well.