One Madison, SL Green Realty’s roughly 1.4 million‑square‑foot trophy office redevelopment overlooking Madison Square Park in New York, has secured a $1.65 billion refinancing loan. The deal is another sign of continued investor appetite for top‑tier office properties amid the market’s flight‑to‑quality trend.
SL Green’s trophy One Madison redevelopment lands $1.65 billion refinancing
Office property is 100% leased with tenants including IBM and Franklin Templeton
By Andria Cheng
CoStar NewsMarch 20, 2026 | 7:25 P.M.
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IN THIS ARTICLE
- Properties
- One Madison
1 Madison Ave, New York, NY
- Companies
- SL Green Realty Corp.
Real Estate