EliseAI has quietly grabbed another full floor at 401 Fifth Avenue in Midtown Manhattan, just a few months after inking a roughly 109,000-square-foot headquarters deal that had the office market buzzing. The fresh expansion is another sign that AI players are committing to real, physical space in Manhattan, even as landlords and brokers report a broader rebound in demand. For nearby tenants and property owners, it plants a buzzy tech name inside a classic Fifth Avenue address and raises a bigger question: how much more of Midtown’s office stack will AI firms claim next?
The deal and the expansion
Back in January, EliseAI signed a 10-year, roughly 109,000-square-foot lease at the Chetrit Organization’s 401 Fifth Avenue, relocating from 33 East 33rd Street, according to Commercial Observer. That initial commitment took up about half of the landmarked building and set the foundation for a bigger New York headcount. CoStar later reported that EliseAI followed up by taking an additional full floor in the same property.
Who negotiated the deal
JLL represented EliseAI in the lease, while Newmark handled leasing for the landlord, and the asking rent on the floors was pegged at roughly $80 per square foot in the company’s announcement and related filings. In a statement included in that release, EliseAI co-founder Minna Song said the expanded footprint would allow the company to "further scale our New York team" and help build the next chapter of AI in housing and healthcare, as published by Business Wire.
Why landlords are paying attention
Market watchers are slotting the EliseAI deal into a larger pattern of office demand led by tech and AI tenants, with Manhattan logging its strongest leasing totals since before the pandemic, according to The Real Deal. EliseAI appears well positioned to support that footprint, having announced a roughly $250 million Series E funding round last year while it stepped up hiring and product expansion, according to EliseAI.
What comes next for Midtown
Smaller AI outfits have been quietly staking out nearby space as well, suggesting that demand is not just about one splashy headquarters. Local coverage highlighted a 20,000-square-foot AI lease on Fifth Avenue earlier this spring, adding to the neighborhood’s tech cluster. That steady trickle of mid-market commitments could keep Midtown landlords and brokers busy as they watch to see whether momentum consolidates into a few giant hubs or remains spread across many ambitious upstarts, according to reporting on an AI upstart grabbing a Fifth Avenue floor.
