Haha - Lucky for local residents, all of the trees I've reported and gotten removed are outside the place where I work, so local property prices have likely not been affected.

Oh, and 311 is a New York City specific municipal phone number you can call for free. It has a ton of information - it's not just for lodging non-emergency complaints - and I think it's underutilized by tourists. I even think they will answer in a variety of different languages as well.