He is professor of architecture at Columbia University's Graduate School of Architecture, Planning and Preservation where he is the founding chair of the Columbia Conference on Architecture, Engineering and Materials and the Director of the Master of Architecture program Core Design Studios. Bell's architectural design has been exhibited at the Museum of Modern Art and his work is also included in the permanent collection of the San Francisco Museum of Modern Art. His Gefter-Press House is featured in Kenneth Frampton's American Masterwork Houses of the 20th and 21st Century.