In a mostly raw ground- and basement-floor duplex loft in Tribeca, the challenges were to work with very limited natural light, to create ‘rooms’ while still maintaining open space, and to respect the beautiful native features of the site, especially the masonry piers in the basement. Near the front entry, we created a loft bedroom, with a coat closet and full, handicapped accessible bathroom beneath. The softly colored sliding resin panels that close off the mezzanine allow it to become a glowing box, a counterpoint to the large skylight at the opposite end of the space. The basement has been subdivided into 2 spaces, with a pale blue wall and cork plank flooring to set off the structural piers. Other elements: central air conditioning, sprinklers, lighting, and ceiling fans.