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William Demarest


William Demarest has been employed in the tree care industry for the last 47 years and has three decades of experience as a practicing tree surgeon and plant health care specialist. William is an ISA-certified arborist and has earned his qualification through the ISA as a Tree Risk Assessment practitioner.

William heads the company’s golf division, which oversees the arboriculture for more than a dozen prestigious courses. He also serves Emerald’s residential clients in Westchester County.

Outside of his career in arboriculture, William served four years in the U.S. Navy.

I couldn't be happier with their services. They are very professional, prompt, polite, and clean up extremely well. I highly recommend them.Roy R.
Committed to the Highest Level of Care

With accreditations by ISA, the Tree Care Industry Association, and an impressive roster of master arborists and ISA-certified tree care professionals, Emerald is the most accredited company of its kind in New York and Connecticut.

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Serving Residential & Commercial
Properties in Westchester County,
Fairfield County & NYC
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