Downtown Boston Office Building Converted to Apartments

Developers plan to transform the 13-story office building at 133 Federal Street into 155 new residential apartments.

Updated on Sept. 28, 2026 in Commercial

Bold vector editorial illustration showing a multi-story urban building facade blending brick architecture with modern glass apartment balconies.
Developers are converting the office property at 133 Federal Street in Boston into 155 residential apartments, supported by new city tax incentives. AI Illustration. Upload story photo >

Live Poll

Should cities prioritize converting underused office buildings into new residential housing units?

The office property at 133 Federal Street in downtown Boston is slated for a major redevelopment. Developers will convert the 13-story structure into 155 residential apartments to repurpose the site.

Why it matters

City officials have introduced tax incentives to encourage owners to find new uses for aging office buildings. This initiative aims to address the changing needs of the commercial real estate market by converting underutilized office space into housing.

The project will create 155 apartments within the 13-story structure located at 133 Federal Street. The building, previously known as the Blue Cross Blue Shield Building and the Transnational Building, was originally designed by Paul Rudolph.

The players

Paul Rudolph

He was a noted architect who originally designed the building at 133 Federal Street.

The details

The conversion project will repurpose the existing office structure into residential living spaces. This effort is supported by city-provided tax incentives designed to facilitate the transition of office properties into viable residential buildings.

Timeline

  1. The news regarding this building conversion project was published on September 27, 2026.

Culture Shift

This conversion reflects a broader shift in urban planning as cities adapt to changing commercial real estate demands. It marks a departure from traditional office utilization toward the increasing prioritization of residential density in downtown districts.

Residents may see a change in the character of the downtown area as office space transitions into residential living. The introduction of these apartments will increase housing density and may influence local demand for neighborhood amenities and services.

The takeaway

Repurposing older office structures can provide essential new housing units while modernizing downtown urban cores. Property owners and developers should monitor local tax incentive programs that may support similar revitalization efforts.

Further reading

For more on local development projects, visit Boston Commercial.

Live Poll

Should cities prioritize converting underused office buildings into new residential housing units?