51 Sleeper Street

Boston, MA

Property Overview

Building Specs

  • Building Type Lab/Office
  • Building Size 153,448 SF
  • Number of Floors 8
  • Built / Renovated Year 1929 / 2020
  • Floor Loading 150 PSF
  • Electrical 12W/SF (Lab) & 6W/SF (Office)
  • Elevators 3 Passengers & 1 Freight
  • HVAC VRV System

About

51 Sleeper Street blends historic character with modern functionality in the heart of Boston’s Seaport District. Originally built as part of the city’s early 20th-century waterfront infrastructure, this classic brick-and-beam property has been meticulously restored to support today’s dynamic work environments. Situated just steps from Martin’s Park and the Harborwalk, the building offers a unique waterfront setting with direct access to open green space, cultural attractions, and world-class amenities. Its strategic location at the intersection of Fort Point and the Seaport places tenants within a short walk of South Station, major innovation centers, and an array of top-tier dining and entertainment options—making 51 Sleeper an exceptional address for forward-looking companies.





Building Amenities

Little Wolf Cafe

Renovated Lobby

Flexible Lounge Event Space
Bike Storage

100 Transit Score: Rider's Paradise

88 Walk Score: Most errands can be accomplished on foot

Location

Team

Nan Fung Life Sciences Real Estate (“NFLSRE”) is led by a world-class management team with over 75 years of combined life sciences real estate development and operations experience. It is an innovative, premier real estate investment and operating company established in 2019. NFLSRE focuses on acquiring, developing, and managing life sciences-related properties in innovation-driven markets across the United States. Nan Fung values relationships with its tenant partners and endeavors for them to be symbiotic and long-lasting.