51 Sleeper Street

Boston, MA


51 Sleeper Street is a 153,500 square foot life science lab and office building. The property sits on the corner of Sleeper Street and Seaport Boulevard with unobstructed views of the Fort Point Channel and Downtown Waterfront. The building is a short walk from the Silver Line, and South Station for access to the Red Line, buses, and the commuter rail. Step into the Seaport District, you’ll feel the energy shift.

100 Transit Score of 51 Sleeper Street Boston MA 02210

Rider's Paradise World-class public transportation

88 Walk Score of 51 Sleeper Street Boston MA 02210 

Very Walkable Most errands can be accomplished on foot.


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.


+ Property Highlights

+ Life Science Lab and Office Conversion 2020-2021

+ Built in 1929

+ 3 elevators

+ 1 Upgraded Freight Elevator
+ 2 in-door Truck Height Loading Docks

+ Lobby Redesign in Process

+ Bike Storage Space

+ Total Rentable Square Footage: 153,500


Tenant Services

Phone #
Security Desk
(617) 451–7870