Spec Lab Buildings Face Extended Vacancies as Boston Market Resets
Boston Global Investors completed 10 World Trade in the Seaport without a single tenant, a 570,000-square-foot building with curved glass and a 17th-floor running track. The developer began construction in 2022 when lab vacancy in the Boston area hovered around 1 percent and speculative construction seemed like a safe bet. Lab vacancy now stands at 32.7 percent. BGI secured more than $540 million in financing from PGIM Real Estate and Wheelock Street Capital for the project, which sits two blocks from Boston Harbor.
Massport owned the site and selected BGI in 2018 after a competitive bid process. The building’s design by Sasaki features asymmetrical facades with no parallel sides, a complication that made construction difficult for Suffolk Construction. Eight of the building’s 14 tenant floors were reconfigured for lab use after initial office-only plans, leaving the top floor for mechanicals and a perimeter running track. A lobby with curved wooden arches, 5,000 triple-pane electrochromic windows, and a 154-person auditorium were included to appeal to a broad range of potential tenants.
The Seaport alone holds several other empty lab and office buildings, including 601 Congress Street at nearly 500,000 square feet, 2 Harbor at 430,000 square feet, and 19 Fid Kennedy Avenue at 250,000 square feet. Brokers at CBRE reported activity from prospective tenants last year, but economic conditions in 2026 have slowed leasing. Analysts expect 10 World Trade to lease ahead of competing buildings once demand recovers, though they caution that improved market sentiment does not immediately translate into signed leases.
Biotech funding and investment have started to rise, and asking rents have dropped from peak levels. South Station Tower and Winthrop Center absorbed much of the demand for trophy office space before 10 World Trade reached completion. John Hynes IV, a vice president at BGI, said lenders have remained patient as the firm waits for the lab market to stabilize. The building’s $10 million smart glass system and rooftop solar panels were designed to position it at the top of the market, a necessity when building without a committed anchor tenant.
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