The Spiral, New York

Tetra Tech’s High Performance Buildings Group is providing mechanical, electrical, plumbing (MEP), fire protection, and energy modeling services for this 65-story office tower encompassing 2.85 million square feet.


  • Size: 2.85 million square feet
  • Construction Cost: $3.7 billion
  • Client/Owner: Tishman Speyer Properties
  • Architect: BIG, Adamson Associates Architects
  • Completion Date: 2022

This project, which is targeting LEED Gold, is one of the largest new commercial developments in New York. Located in Hudson Yards, the office tower will occupy a full block and features landscaped terraces that spiral up the building’s 1,005-foot-tall exterior. The building includes a lobby with 30-foot ceilings and 27,000 square feet of retail space.

Exterior images courtesy of BIG
Cascading terraces and interior images courtesy of Neoscape