AI Startup Thinking Machines Lab Takes 22K SF at 79 Fifth Avenue for First NYC Office
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 241st 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
Artificial intelligence research startup Thinking Machines Lab is coming to New York. Just a year and a half after launching in San Francisco, the company has inked a 21,500-square-foot lease at Kalimian Properties ’…
External link. Real Estate Trail does not republish source content.
Related coverage — New York · Office
George Comfort & Sons Underway on Renovation of 350,000 SF Office Building in Lower Manhattan
NEW YORK CITY — Local owner-operator George Comfort & Sons is underway on the renovation of 44 Wall Street, a 350,000-square-foot office building in Lower Manhattan’s Financial District. Designed by Gensler, the proje…
KeyBank Expands to 113K SF at Elecor’s 1301 Avenue of the Americas
A major banking institution has added 15,292 square feet to its Manhattan office footprint, Commercial Observer has learned. Keybank signed a 15-year deal to renew its existing space and expand to 112,924 square feet…
Brooklyn Office Leasing Hits Decade-Low Availability
JLL Arranges Refinancing of 48,312 SF Medical Office Building in New Providence, New Jersey
NEW PROVIDENCE, N.J. — JLL has arranged a loan of an undisclosed amount for the refinancing of a 48,312-square-foot medical office building in New Providence, about 25 miles west of New York City. Murray Hill Medical…
Zimmet Law Group Signs 10-Year Lease for 515 Madison Ave.
GFP Real Estate announced that Zimmet Law Group P.C. has signed a new office lease for 5,476 square feet at 515 Madison Ave. in Manhattan’s Plaza District. Zimmet Law Group will occupy Suite 603 on the sixth floor of…
Taft Signs 16,563 SF Office Lease in Midtown Manhattan
NEW YORK CITY — Taft has signed a 16,563-square-foot office lease in Midtown Manhattan. The law firm will occupy the entire 24th floor of 1155 Avenue of the Americas, a 42-story building located between 44th and 45th…