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Historic 1871 cast-iron building in SoHo's landmark district with storied past as Leo Castelli gallery and Paul Smith flagship Undergoing sensitive restoration and residential conversion with rooftop expansion following 2022 sale
142 Greene Street is a five-story cast-iron building located in the heart of SoHo’s historic Cast-Iron District between West Houston and Prince Streets. Built in 1871 as a paper box factory, the structure exemplifies the architectural character that defines the neighborhood: a classical cast-iron façade, tall arched windows, and a columned storefront base.
The building gained cultural prominence in the late 20th century when legendary art dealer Leo Castelli opened a gallery space there, exhibiting artists like Roy Lichtenstein and contributing to SoHo’s transformation into an international art hub. In 2006, fashion designer Paul Smith purchased the property for $27.25 million and used it as his SoHo flagship before selling it in 2022 for $39 million to an affiliate of WhatsApp cofounder Jan Koum.
Now part of a proposed residential redevelopment, 142 Greene Street is poised for a sensitive restoration and rooftop expansion, under review by the NYC Landmarks Preservation Commission. The design team plans to disassemble and restore the deteriorating cast-iron façade, modernize the interiors, and add two penthouse levels.
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