Manhattan’s Plaza District hasn’t seen a new ground-up office building in more than thirty years. 625 Madison Avenue changes that. Related Companies, working with Andrew Mathias, is building a 34-story, 684-foot tower on the Madison Avenue block between East 58th and 59th Streets, with Foster + Partners and Gensler sharing the design. Foundations are in the ground as of summer 2026.
Project Scope
The building will deliver about 858,500 square feet of office space with column-free floor plates, private terraces, and direct sightlines to Central Park. The developers are marketing it as carbon-neutral in operation, a pitch aimed at the corporate tenants now writing emissions targets into their space requirements. Related has said it wants record Manhattan rents here, betting the scarcity of new trophy space in the Plaza core will carry the pricing. The tower replaces an aging commercial building that was cleared from the site in late 2025.
Why It Matters
Most of Manhattan’s office story since 2023 has been about conversion, sublease gluts, and contraction. A speculative office start on Madison Avenue cuts against that, and it’s a read on where demand still lives: brand-new, amenity-dense, low-carbon space at the very top of the market, in a location tenants can’t replicate. If it leases near the rents Related is chasing, it strengthens the case that the flight to quality has years left to run. If it stalls, it becomes the project every lender points to. Either way, it’s the clearest test yet of whether new Class A supply can pencil in a market where everything else is being repriced downward.
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Project Team & Details
| Developer | Related Companies |
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| Architect | Foster + Partners |
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| Consultants | Gensler (Design Architect) |
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| Status | Under Construction |
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| Sustainability Certification | Carbon-Neutral Operations (targeted) |
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| Funding Source | Private |
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