Park Avenue Fills Up As Office Tenants Snag Every Square Foot

Park Avenue’s office market is tight — and getting tighter.
At Vornado Realty Trust and SL Green’s 280 Park Avenue, financial firms Elliott Investment Management, Wells Fargo and PJT Partner inked deals for a total of 90,000 square feet in the last three months, leaving a mere 19,000 square feet of available space.
That’s just one example of the corridor’s limited inventory. Project management firm Turner & Townsend signed a lease in February for 24,000 square feet at SL Green’s 100 Park Avenue, bringing the 36-story tower to full occupancy. Southern Land Company’s 13,000-square-foot lease at Global Holdings’ 99 Park Avenue last summer brought the Class A tower to capacity.
“If you want large blocks, they just don’t exist,” said JLL’s Joe Messina, crediting financial and legal firms with gobbling up much of the space. “Some clients say that being on the avenue itself is an amenity because of the proximity to the people that you’re doing business with, you’re rubbing shoulders with it, you’re grabbing lunch with and you pass on the street.”
Park Avenue’s vacancy rate for Class A and B buildings is hovering around 6.9 percent — near 2018 levels and among the lowest in the city, according to JLL data. In trophy towers, availability is even tighter, at just 3.8 percent. Leasing volume hit 3.8 million square feet in 2025, driven largely by financial services firms. While that’s down from 4.5 million in 2024, the dip reflects a shortage of available space rather than a slowdown in demand, according to JLL.
CBRE’s Neil King described a post-pandemic rebound led by financial services companies that are growing headcount. With large blocks increasingly scarce, tenants are getting creative by stitching together space across multiple buildings. Investment firm Carlyle did just that, signing leases for more than 200,000 square feet across two Park Avenue towers after outgrowing its headquarters at One Vanderbilt.
“As long as I’ve been in New York, I have not seen that many tenants evaluate that as a real long-term strategic occupancy opportunity,” King said. “That’s just indicative of the fact that Park Avenue just doesn’t have significant space available.”
JP Morgan Chase’s massive investment in its gleaming new headquarters at 270 Park Avenue and several nearby buildings has also created buzz around the corridor, and forced its competitors to rethink their own office strategies. For tenants unable to secure blocks on Park, alternatives on adjacent corridors have become increasingly attractive. Lexington and Sixth Avenue have seen a surge of leasing, while Madison Avenue and even Third Avenue are benefiting from the overflow.
With no new construction delivering until at least 2029, Park Avenue’s tight market is expected to persist. The trend mirrors the broader bullish streak in New York’s office market, with financial firms at the forefront.
“We’re coming off arguably the best leasing year that New York has had holistically, but it all started by financial services in the Midtown core, particularly on Park,” King said.
Read more
Carlyle expands Midtown footprint with 202K sf across Park Avenue towers
Jamie Dimon’s $5B Midtown “city” comes into focus
Asset manager inks 40K sf lease at Vornado and SL Green’s 280 Park



