This renovation project updates an existing New York 1920s apartment with a modern sensibility. Replacing the cellular pre-war layout of the central spaces with a built-in walnut credenza and white lacquer side board effectively opens the plan to create a unified and spacious living area. The back side of the full-height dining room side-board screens views from the entrance foyer. The modern design of the new built-ins at center of the space is balanced by perimeter radiator covers and a full-height bookshelf which work with the period trim detail. The new kitchen has been relocated to open directly onto the dining room, and features a long, solid mahogany island serving counter. An operable white lacquer and translucent glass partition pulls out from behind a concealed panel to separate the two rooms, providing flexibility for both casual and formal arrangements. The relocation of the kitchen allows for the addition of a small private study, and a powder room, both absent from the original layout. Photography: Mikiko Kikuyama