It is clearly from the photograph, liriodendron tulipifera, which as summer ensues, like clockwork, oxidation of many of the leaves exhibit this response.
This can happen in ample rainfall years as well as in drought ones.
The tulip poplar, also known as the yellow poplar, is a sensitive tree in that it is submissive to construction activities and environmental fluctuations, as well.
Left alone in a forested wilderness, it may perhaps shed less of the leaf canopy as that of its urban or suburban kin, but it will always begin shedding leaves in early middle summer.
Unless the tree is obviously damaged by mechanical or biological means, just grab a rake!
Look up Liriodendron tulipifera in any of Michael Dirr’s numerous publications.

Unfortunately from this distance it’s not close enough to see of leaves shape & barks to tell which type of trees or diseases. Please resubmit for closeup of leaves, twigs & trunk (bark). Regardless of its health, in my humble opinion with only 30ft from the surrounding homes & properties that is kind of chancy with weather & diseases. Also trees can appear healthy outside but not inside. You might have to require service from Certified Arborists for proper diagnostic and treatment. Best wishes!