Property line/tree neighbor question

[Sam3]

macphanatic wrote:
In the Northeast, survey markers tend to be steel spikes or rebar driven into the ground a few inches below the surface. If you use a metal detector, you may be able to locate the survey markers. If you can't find the markers, it would wise to have your property surveyed and proper markers set.

I think this should be the first step, have a survey done. That way it will be known where actually the property lines are. Up until that point, almost everything here is speculation.

Step two would be to read up on the local ordinances, find out what are the responsibilities of property owners regarding trees.

Then you can discuss with the neighbor trimming, not trimming,etc.