LPC Reviews Gensler’s Two-Floor Expansion of One Broadway, in Battery Park, Manhattan

One Broadway - GenslerOne Broadway - Gensler

New York developer Midtown Equities has partnered with architecture firm Gensler to construct a rooftop extension atop one of Battery Park’s oldest extant structures, known today as One Broadway. The commercial office building was originally completed in 1882, and sits at the same address once occupied by George Washington’s New York headquarters. Considering the age and rich history of the building, approvals are required by New York City’s Landmarks Preservation Commission.

Design proposals for the new development include horizontal additions beginning at the building’s 13th floor. If approved, this would expand the 13th floor to 6,572 square feet, and add a new 14th floor that would yield 6,640 square feet. Proposed alterations also include the restoration and modification of existing stair and elevator bulkheads to match original design intent, as well as a new cooling tower.

The existing condition (left) versus the proposed conditions (right) at One Broadway - Gensler

The existing condition (left) versus the proposed conditions (right) at One Broadway – Gensler

The existing condition (left) versus the proposed conditions (right) at One Broadway - Gensler

The existing condition (left) versus the proposed conditions (right) at One Broadway – Gensler

The new roof additions are clad in unexposed copper patina that will slowly oxidize to match existing copper elements of the historic building. The materials were selected as part of an inventive strategy to preserve the historical identity of the structure.

Illustration depicts the expected transition of the copper patina as the material oxidizes over time

Illustration depicts the expected transition of the copper patina as the material oxidizes over time.

Proposed South elevation at One Broadway - Gensler

Proposed South elevation at One Broadway – Gensler

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2 Comments on "LPC Reviews Gensler’s Two-Floor Expansion of One Broadway, in Battery Park, Manhattan"

  1. Alan Reissmann | June 8, 2019 at 11:49 pm | Reply

    The proposal respects a beautiful old building

  2. Residential or commercial?

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