The Twenty1 is a new, luxury residential development located at 117 West 21st Street in New York City’s chic Chelsea neighborhood. An existing four-story commercial structure underwent an extensive renovation and redesign transforming over 38,000 square feet into six expansive full-floor units, two duplex penthouses and one townhouse unit. GRADE’s thoughtful approach to the interior design and architecture pays homage to the area’s local heritage while creating a modern, highly exclusive lifestyle experience for its residents. The exterior design and architecture feature elegant, modern detailing while referencing the structure’s Neo-Classical surroundings. Expansive, open floor plans and top-line materials, such as limestone, bronze and wood add layers of luxurious appeal in a sophisticated palette of natural materials.