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Extell Development

About: Extell Development is a New York City-based real estate development company.

Headquartered in: New York, NY

Founded in: 1989

Founded by: Gary Barnett

Get up to speed

SL Green’s Marc Holliday, RXR’s Scott Rechler, Extell’s Gary Barnett with Worldwide Plaza
New York
Jan 8, 2026

Holliday, Rechler, Barnett square off in Worldwide Plaza foreclosure brawl: “Sham auction”

SL Green, RXR ask judge to block Extell’s UCC sale tied to Midtown tower
Extell Development’s Gary Barnett, SL Green’s Marc Holliday and RXR’s Scott Rechler with 825 Eighth Avenue
New York
Nov 18, 2025

Worldwide Plaza surprise: Gary Barnett lined up to take over  

Extell Development bought mezzanine debt ahead of UCC foreclosure
Alon, Tal and Oren Alexander
New York
Dec 13, 2025

Anonymous sources: How the Alexanders’ alleged victims will play into trial

The latest on sex trafficking proceedings & more from a resi reporter

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