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SLGBullishCorporate Developmentsnews
High materiality8/10

SLG-Mori JV to Build 850k-SF Madison Avenue Tower

May 31, 2026, 1:00 PM EDT1 sourcesAI-analyzed
Why it may matterVerify against the original reporting

The 49% Mori stake reduces SLG's standalone equity risk on the project while preserving development/lease fees; long development horizon supports earnings visibility; potential near-term upside from JV economics and premium leasing demand in a revitalized Madison corridor.

AI summary

What happened, with direct paths to the underlying reporting

SLG and Mori Building launched a joint venture to develop an 850,000-square-foot, 46-story office tower on Madison Avenue, with completion expected in late 2031. Demolition begins in Q3, and the building will feature extensive amenities and a Daniel Boulud–led Epicerie tenant space. The partnership highlights a longer-term NYC prime-office thesis and could boost SLG's development pipeline and fee-related income.

  • SLG and Mori form JV to develop 850k-sf Madison Ave tower.
  • Demolition starts Q3; completion targeted for late 2031.
  • Amenities include terraces, wellness center, auditorium, padel court.
  • 49% stake sold to Mori; SLG remains development and leasing manager.
  • Madison corridor boom driven by One Vanderbilt and JPM HQ.

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