New lobby and “building within a building” coming to 50 Post Office Square

50 Post Office Square, a historic 18-story, 782,304-square-foot Art Deco tower overlooking the eponymous landmark park, is receiving a new lobby, part of a new “building within a building” featuring amenities desirable to 21st century tenants. The lobby will have the address of 110 High Street, and will be exclusive to tenants of the new 200,000-square-foot “building within a building”, which will be located across 50 Post Office Square’s first six floors. The lobby will feature a high ceiling enclosed by a 35-foot-tall glass curtain wall, as well as an indoor-outdoor LED screen. Atop the lobby will be an outdoor roof deck also exclusive to “building within a building” tenants.

50 Post Office Square is the latest existing Boston office building to receive a “building within a building” across lower floors, a growing strategy to bring new life to older assets. Boston Properties recently introduced a boutique “building within a building” across the first six levels of the 62-story 200 Clarendon Street tower in the Back Bay, formerly known as the John Hancock Tower, with the address of 120 St. James Avenue. Boston Properties’ “building within a building” is designed to appeal to technology tenants with younger workers, many of whom prefer a more direct, visual connection to cities’ streetscapes well served by space closer to ground level.

Installation of the glass curtain wall of the 110 High Street lobby is nearly complete, and fit out of the lobby’s interior and roof deck will soon begin. Completion of the lobby is expected this Summer. The following are photographs of the 110 High Street lobby:

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