Mechanical Systems Work at 400 East 84th Street, Manhattan

Homeowners in the Upper East Side-Yorkville neighborhood can see the scope of mechanical system renovations for existing apartment units. This project involves significant upgrades to the internal systems of units 28C through 39C, as detailed in the filed plans.

This permit was issued on July 29, 2026, with an estimated project cost of $130,000. Keystone Builders Group is listed as the general contractor for this extensive mechanical work.