Upper East Side Townhouse Restoration & New Construction
Award-Winning Limestone Mansion and New Ground-Up Development
Project Type: Historic Townhouse Restoration and New Construction
Location: Carnegie Hill, Upper East Side, NYC
Size: 18,000 Sq Ft
Scope: Restoration, conversion, and new ground-up construction
Structure: Combined Restoration of No. 3 and construction at No. 5
Carhart Mansion
Entry Sequence
A newly defined entry sequence establishes a clear architectural procession into the home, transitioning from the street into a series of carefully scaled spaces that culminate in the restored Rotunda. The sequence reintroduces hierarchy and clarity, reinforcing the ceremonial nature of arrival within the historic structure.
Restoration and the Historic Core
At the heart of the project is the preservation and restoration of the Rotunda stair hall and Codman’s Adam Room. Historic plasterwork was documented through 3D scanning, with missing elements recreated using advanced fabrication techniques and refined by hand. Original materials were carefully conserved while adapting the spaces for contemporary use.
Contemporary Additions and Upper Floors
Above the historic levels, the design transitions to a more contemporary architectural language. Interventions include a light-filled kitchen, reconfigured living spaces, and a new open-to-the-sky rotunda inspired by the Pantheon, introducing natural light deep into the plan while maintaining a dialogue with the building’s historic geometry. The program extends beyond the original envelope with the addition of a penthouse level and rooftop amenities, including a basketball court and landscaped outdoor spaces. Below grade, the cellar was fully developed to include a movie theater, wine cellar, and additional recreational spaces.
Construction Phase Images
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The result is a residence that frames both the city and Central Park,
balancing historic continuity with contemporary living.
Zivkovic Connolly Architects specialize in the design and renovation of historic townhouses and mansions across New York City, including the Upper East Side, West Village, and beyond. Explore additional townhouse projects to learn more.
