The New York City Landmarks Preservation Commission (LPC) has voted unanimously to designate the Modulightor Building Apartment Duplex—Paul Rudolph’s former Manhattan home at 246 East 58th Street—an interior landmark. The landmarked residential duplex is sited on the third and fourth floors of the Modulightor Building. Notable interior design features are the staircase and built-in shelving units that house books, and other collected items. This news comes two years after the Modulightor Building itself was declared a New York City individual landmark in 2023. Now, both the exterior and the apartment duplex are protected under the Landmarks Law. The Modulightor Building itself was declared a New York City individual landmark in 2023. (Courtesy Paul Rudolph Institute for Modern Architecture) “We are enthusiastic for this designation not only for its spatially rich and light-filled Modern design but also because of the intimacy of the space and how Rudolph’s hand and belongings can be found nearly at every turn,” Docomomo US executive director Liz Waytkus said in a statement. “It is so meaningful that Modulightor, which houses the Paul Rudolph Institute for Modern Architecture, continues to host open house events, encourages dialogue and offers a unique New York experience,” Waytkus added. New York City Councilmember Keith Powers supported the decision, crediting the Paul Rudolph Institute for Modern Architecture with hosting “regular open houses accessible to our community to learn about its unique design, and to explore the amazing world of architecture.” The apartment duplex takes up the third and fourth floors. (Courtesy NYC Landmarks Preservation Commmison) The Modulightor Building takes its name from a lighting fixture company Rudolph cofounded. It was designed in 1989 and completed in two phases. It originally had only four floors, with the apartment duplex taking up the upper half. Between 2010 and 2016, architect Mark Squeo added two more floors to the top, and a roof deck. Sarah Carroll, LPC chair, credited the apartment duplex as a “remarkable example of late 20th century interior design.” “Its spatial complexity, innovative use of light, and carefully crafted architectural details reflect Rudolph’s unique vision and enduring influence,” Carroll said. “With today’s designation, we preserve a vital example of New York City’s rich design heritage, and ensure this special space will continue to inspire architects, designers, and visitors alike for generations to come.”