One Post Office Square expansion and improvements expected to commence this June

Anchor Line Partners and JLL aim to start construction of the expansion and renovation of the 41-story One Post Office Square tower in the Financial District this June per newly revealed project plans. Construction would take place over the next two years, with completion expected in the fourth quarter of 2018. One Post Office Square, which was completed in 1980, would be fully upgraded with a new glass curtainwall facade and new indoor and outdoor amenity spaces. Corner infill areas would be constructed throughout the existing tower, and a new 18-story addition containing parking, office space and mechanical space would be constructed at One Post Office Square’s rear, replacing the tower’s existing parking garage.

One Post Office Square’s total floor area would be expanded to 1.1 million square feet from 832,000; the upgraded tower would contain over one million square feet of office space in addition to 52,100 square feet of retail space and a new 300-seat, 8,000-square-foot restaurant. The proponents have filed an Expanded Project Notification Form (EPNF) detailing the proposed plans for One Post Office Square with the Boston Planning & Development Agency (BPDA), who is now reviewing the plans.

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