Manhattan’s office sublease market is contracting at an unprecedented pace, with available space dropping below 11 million square feet in the second quarter—less than half of the 23 million square feet recorded at the end of 2022. This decline reflects strong leasing activity mainly driven by emerging AI companies and established tech firms expanding rapidly across the city.
The surge from AI-related businesses marks a significant shift in leasing dynamics. Landlords increasingly are withdrawing sublease space to negotiate direct leases at considerably higher rates. This trend is reshaping the Manhattan office sector, as long-term commitments rise among technology, financial services, and law firms alike.
Leasing data highlights the momentum behind this trend: AI companies have signed over 20 leases totaling nearly 720,000 square feet so far in 2026, approaching last year’s total of 845,000 square feet. Noteworthy expansions include AI healthcare platform Tennr’s acquisition of 125,000 square feet in a former Google space at 345 Hudson Street, Uber’s addition of 86,000 square feet previously occupied by WPP at 3 World Trade Center, and Bank of Montreal’s lease of 82,000 square feet in former Roivant Sciences space on West 43rd Street.
Additionally, Datasite, an AI-driven financial advisory firm, secured 76,000 square feet at 3 Columbus Circle, space previously held by a global marketing and advertising agency. Datasite plans to house its Grata and Blueflame AI divisions there while maintaining its existing offices on Sixth Avenue.
This rapid absorption of sublease availability underscores a broader recovery in Manhattan’s office market, fueled increasingly by industries centered around AI and technological innovation. Landlords’ strategy to reclaim and directly lease spaces signifies rising confidence in the office sector’s rebound and the premium placed on securing long-term tenants from growing sectors.