The 70 Hudson Yards office tower has officially begun rising above street level, marking a major construction milestone for what is designed to be New York City’s first zero-carbon-emission skyscraper.

Vertical progress is now visible on the 52-story, 832-foot-tall Class AA commercial tower in Hudson Yards, Manhattan. Developed as a joint venture between Related Companies and Oxford Properties Group, the project is located along Hudson Boulevard East between West 35th and 36th Streets (alternately addressed as 514 West 36th Street), with direct access to Bella Abzug Park and the 7 train.

Design-Driven, All-Electric Tower Combines Efficiency, Scale, and Sustainability

Designed by Roger Ferris + Partners (design architect) and Gensler, with lobby interiors by INC Architecture & Design, the building will deliver just under 1.4 million square feet of office space. Floorplates include podium levels of approximately 35,650 square feet and typical tower floors of 26,667 square feet — hyper-efficient and largely column-free. The design features a high-performance glass curtain wall with bronze-hued articulated metal piers, loggias, and multiple cantilevered outdoor terraces. It is targeting LEED Platinum certification and is engineered as an all-electric, carbon-neutral structure.

Developers expanded the project’s square footage by roughly 300,000 square feet after contributing to the Hudson Yards District Improvement Fund and acquiring air rights. Earlier conceptual plans from 2025 described a smaller 47-story, 717-foot, 1.1-million-square-foot tower. Some financing documents refer to a “72-story” total floor count that includes mechanical and podium levels. Current on-site reporting consistently describes the above-grade tower as 52 stories rising to 832 feet.

Anchor tenant

Deloitte signed on as the anchor tenant in 2025, committing to more than 800,000 square feet — approximately floors 16 through 45 — for its new U.S. headquarters. The firm will relocate from 30 Rockefeller Plaza in what is reported as New York City’s largest office tenant relocation since 2020. Upper floors will offer premium space with private terraces and dedicated amenities, including a full-floor club with dining, event, wellness, and multimedia facilities. Leasing for the remaining space is underway.

The project achieved full capitalization on January 4–5, 2026, with a $2.45 billion capital stack that includes a $1.6 billion construction loan — the largest in New York since 2020. The loan was fully underwritten, structured, and led by Wells Fargo, Bank of America, and Standard Chartered, with additional equity from institutional investors. This level of capital commitment aligns with broader confidence in trophy office assets, as seen in the recent $1.65 billion refinancing of One Madison Avenue.

Key construction milestones include:

• Groundbreaking: July 2025
• Foundations and excavation: Underway through late 2025
• Tower crane erection: Mid-February 2026
• Vertical construction begins / rises above street level: March 30, 2026 (foundations now complete; reinforced concrete core walls forming with visible yellow formwork and scaffolding at the western corner; concrete pouring active)

Move-ins are targeted for late 2028 (fall).

Related Companies and Oxford Properties described the full financing and early construction start as a signal of confidence in the Hudson Yards neighborhood, where their existing office portfolio is 100% occupied. The tower represents the next phase of commercial development on the 28-acre Hudson Yards campus.

As of March, 2026, work continues on the core and superstructure with no reported delays. The project remains one of the most closely watched ground-up office developments in Manhattan amid a selective but resilient market for premium, sustainable workspace.

Project Factsheet: 70 Hudson Yards Office Tower

Project Overview

• Status: Under construction
• Estimated Completion: 2028.
• Building Type: Class-A Commercial Office Tower.
• Sustainability Goal: Designed as a zero-carbon-emissions building.

Physical Specifications

• Story Count: 52 stories.
• Height: Approximately 832 feet (254 meters).
• Total Square Footage: 1.4 million square feet.
• Anchor Tenant: Deloitte (800,000 square feet).

Project Team

• Developers: Related Companies and Oxford Properties Group.
• Design Architects: Roger Ferris + Partners.
• Executive Architect: Gensler.
• Structural Engineer: Thornton Tomasetti.
• Sustainability Consultant: Viridian Energy & Environmental.

Key Features & Amenities

• Floor Plates: Large, column-free floor plates ranging from 30,000 to 50,000 square feet.
• Outdoor Space: Multiple landscaped terraces for tenant use.
• Energy Systems: All-electric heating and cooling systems to meet Local Law 97 requirements.
• Transit Access: Direct proximity to the 7-train subway extension and the High Line.

Major Milestones

• 2023–2024: Site preparation and foundation work.
• Late 2025: Major lease agreement signed by Deloitte, anchoring the project.
• Q1 2026: Superstructure construction officially goes vertical.
• 2027 (Projected): Building topping out.
• 2028 (Projected): Interior fit-outs and official opening.