realestate

Seaport's 17 State St. office tower gains momentum with fresh lease agreements

Leasing is brisk at 17 State St. near the Seaport after RFR Realty refinanced the harbor-facing office tower in January.

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easing activity is strong at 17 State St., a 571,000 square-foot office tower near the Seaport, following RFR Realty's refinancing in January. The refinance was one of three deals secured by RFR head Aby Rosen on previously distressed properties.

    At 17 State St., which RFR has owned for 25 years, five renewals totaling 68,362 square feet have been signed. Notably, Alphadyne Investment Management renewed a large portion of the building early on, taking 43,872 square feet. Additionally, three new tenants have signed leases for over 12,000 square feet, including Optifino, an AI-powered life insurance tech firm.

    The tower has launched a new amenities space on its third floor, featuring a lounge, cafe, library, screening room, and ornamental foliage inspired by nearby Battery Park. As of now, the building is 89% leased, with asking rents ranging from $65 to $75 per square foot.

    Meanwhile, 5 Penn Plaza continues to thrive under investor-landlord Stephen Haymes' ownership. The 1916 structure has secured another new tenant in Fireblocks, a blockchain security platform that signed for 35,000 square feet on the entire 23rd floor and part of the penthouse with a wraparound terrace. The building boasts a new lobby, open views, an amenities center, and a dog-friendly roof terrace, with over 85% of its space leased. Asking rents are in the $70-$80 per square foot range.

Seaport's 17 State St. office tower in Boston signs new lease agreements.