Loft

The storage unit continues in the living room, marked by a Tiki sofa by local design company Fogia. NOTE designed the stool as well as the coffee table, which was created for the French brand La Chance as part of a series called Zorro.

“We took away a very thick, heavy staircase that led to the loft, and designed one that had a much lighter look,” Wåhlin says. “The new one, made of steel, looks simple and indeed light—but is in fact super heavy and was a real challenge to construct.”

This New York City home is studded with pieces by such famous names as Knoll, Saarinen, and Risom. Deployed throughout the loft, these modern icons at once unify and separate work and life. Like the architecture, they can be read two ways: as recognizably typical office furniture or as prized home-design collectibles.

Kartheiser's courtyard also includes a dry sauna with a ceiling made from 2,500 pieces of wood.