Nonprofit Biohub, Software Firm Fundraise Up Lease 20K SF at 100-104 Fifth Avenue
Why this matters
Office continues to trade in two distinct markets: trophy assets in walkable submarkets that are leasing at or near record rents, and commodity Class B and C buildings where the basis is still resetting. Underwriting on the latter has moved toward replacement-cost-minus, with credit underwriting now leaning on tenant covenant and remaining lease term rather than mark-to-market expectations. New York continues to bifurcate sharply: trophy office leasing at record rents, commodity Class B in conversion discussions or court-supervised processes. Rent-stabilized multifamily remains supply-constrained and tightly held. For LP-positioned capital, the read-through is that the bifurcation is now a structural feature of the sector, not a cycle to wait out.
Editorial analysis · Real Estate Trail Editorial
On the RET wire
- The 240th New York story tracked on the wire in August 2026. All New York coverage →
- Disclosed office deal value tracked in August 2026: $16.3B across 60 reported transactions. All Office coverage →
Computed from Real Estate Trail’s own tracked coverage
Two nonprofit-related tenants are moving to an office just west of Manhattan’s Union Square . In the largest deal, the Chan Zuckerberg Biohub , better known simply as Biohub , secured a 10,666-square-foot lease at Sov…
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