affordable housing, sustainable, transit-oriented development, multi-family, construction, east boston
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  • Exterior - Photo by Ed Wonsek - street in foreground. Two buildings with different facades with a road between.
  • Exterior - Photo by Ed Wonsek -building with grey siding, windows. Bicyclists in street beside building.
  • Exterior - Photo by Ed Wonsek - woman walking down street at dusk. Street trees and plantings. Different facade treatments on buildings on either side of the street.
  • Exterior - Photo by Ed Wonsek - Decorative blue lighting in pedestrian corridor. Parking. Two women stopped in foreground of picture looking at a phone. Dusk.
  • Interior - Photo by Ed Wonsek - communal area in residential building. Seating with four blue chairs. A kitchen area with sink in background. Artwork on the wall.-
  • Interior - Photo by Ed Wonsek -photo of an apartment unit living, dining, and kitchen area. Primarily white furniture and carpet with stainless steel appliances in the kitchen.



The 125/133 Sumner Street project consisted of the demolition of four existing buildings, and the construction of two, three-story wood frame residential buildings totaling 52 rental and for sale units. The Harborwalk Residences condo building is a mix of 30 affordable and market rate units, and all 22 units of the Harbor125 Apartments are affordable. The new construction also included a 1,040 SF public community room and outdoor patio with sweeping harbor and downtown skyline views. The buildings also contains approximately 3,400 SF of ground-floor retail space facing Sumner Street, 19 surface parking spaces and 50 bicycle storage spaces.


The project encountered both extensive environmental remediation work during demolition and preparation of the site as well as a construction pause caused by the COVID-19 pandemic. Both of the new buildings meet LEED Gold certification standards established by the U.S. Green Building Council’s LEED for Homes (Version 4) program, including Energy Star certification and EPA’s Indoor airPLUS label for high indoor air quality.


The project is located one block from the Massachusetts Bay Transportation Authority’s MBTA Blue Line station at Maverick.


Boston Mayor Janey Celebrates Opening of New Affordable Housing and Home Ownership Opportunities along East Boston Waterfront


Winn Development / Boston Housing Authority


The Architectural Team

project cost

$28 Million


63,000 SF