The quite handsome 17-story, mid-block, new residential building at 4 West 21st Street was completed in 2006. It is a condop, which means it is a co-operative building that has condominium-like rules.

The building is distinguished by its interesting and unusual facade of flush and indented windows that make alternating two-story-high window rectangles. This fenestration pattern overlaps a three-story-high facade grid creating a rich rhythm and visual modulation.

The building has 56 apartments.

It has been designed by Hugh Hardy of H3 Hardy Collaboration Architecture and SCLE Architects for The Brodsky Organization.

Apartments range in size from 1,073 to 1,674 square feet and include 5 one-bedroom units, 37 two-bedroom units, 4 two-bedroom units with terraces, five three-bedroom units and two penthouses. 

Apartment layouts feature flexibility through the use of sliding pocket doors. The open kitchens have Poliform Varenna high gloss lacquer cabinets and Sub-Zero and Miele appliances and Pied Auberge stone countertops. The bathrooms, designed by Antony Todd, have Robern medicine cabinets and Kohler Tea For Two bathtubs.

The building has a garage with space for more than 100 cars, a gym and a landscaped terrace.

The project was developed by Alexander Brodsky and J. Dean Amro of The Brodsky Organization. Mr. Brodsky and Mr. Amro are grandsons of Nathan Brodsky, the founder of the Brodsky Organization, which was the developer of the BridgeTower Place condominium building near the Manhattan entrance to the Queensboro Bridge and has developed several major high-rise rental towers south of the Lincoln Center for the Performing Arts.