Stairs

Architect Line Solgaard, founder of the eponymous Oslo- and Fredrikstad-based firm, designed a getaway for her family in the place where she grew up. Untreated, exposed concrete pairs with cedar cladding; custom, oak-paneled ceilings; and a glass roof in the center of the home that opens like a sunroof for natural ventilation.

The new millwork tucks neatly into the existing niche of the living room, and the couch base was designed around the dimensions of a single bed mattress.

End-grain Kaswell flooring, a marble-topped table, and wood-and-metal chairs help to update the open-plan dining area.