Equity Management Firm Forest Avenue Capital Inks 7K-SF Lease at 45 East 53rd Street
It was one of three new leases at the building known as Park 53 totaling 19,145 square feet
By Amanda Schiavo November 10, 2026 2:33 pm
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Park 53, a 19-story boutique office property at 45 East 53rd Street in Midtown Manhattan, has welcomed three new tenants across space on three floors, spanning a total of 19,145 square feet, Commercial Observer has learned.
The largest lease was a 7,145-square-foot deal for equity management firm Forest Avenue Capital, which will occupy space on the seventh floor and relocate from 9 West 57th Street, according to landlord broker JLL. Sinclair Li and Pat Moroney from CBRE represented Forest Avenue Capital in the deal.
JLL’s Mitchell Konsker, Benjamin Bass, Alexander Chudnoff, Greg Wang and Thomas Swartz represented building owners ZG Capital Partners and Rialto Capital Management on all three deals, the brokerage told CO.
“The Park Avenue corridor continues to attract firms that place a premium on location and the quality of their office environment,” Konsker said in a statement. “The activity we’re seeing at Park 53 reflects that demand. These tenants are coming from established Midtown addresses and choosing a more boutique office environment without sacrificing the benefits of being in the heart of the Plaza District.”
Meanwhile, private equity firm Ancient Financial leased 6,000 square feet on Park 53’s 14th floor and will expand its office footprint in a move from 520 Fifth Avenue. Brent Ozarowski and Kevin Sullivan from Newmark represented the tenant.
In the third deal at Park 53, real estate investment trust Curbline Properties inked a 6,000-square-foot deal on the 13th floor and will relocate from 320 Park Avenue. CBRE’s Conor Kenny represented the tenant on this deal.
The tenants’ brokers did not immediately respond to CO’s requests for comment. The specific asking rents and the lengths of each lease were not disclosed, although JLL did note that the asking rents in the building range between $140 and $165 per square foot.
“We continue to attract an exceptional caliber of tenants to Park 53, and these three new leases are another strong endorsement of what we’ve created here,” Bobby Zar, principal at ZG Capital, said in a statement. “From the outset, our goal was to establish a property that would appeal to discerning firms looking for a more personalized office experience. Seeing that vision resonate with such a strong mix of tenants is incredibly rewarding, and we’re excited to build on this momentum.”
Other tenants at Park 53 include real estate owner and operator Shorenstein and alternative asset manager Bramshill Investments.
Amanda Schiavo can be reached at aschiavo@commercialobserver.com.
