Plywood walls and yellow barn doors animate the light-filled interior, as do Western touches like leather door pulls and seat cushions, fabricated by a saddle maker. As a nod to the ’50s—and to mellow the prefab feeling—Sandston used lots of texture, often with recycled or renewable materials, like the cork flooring in the kitchen. “We tried to leave everything as plain as possible,” Sandston says. “You’re not looking at anything glorified. You’re looking at honest materials and honest function.” The mobile dining table that Sandston topped with wild-edged, reclaimed walnut has a steel X-shaped base—a playful nod to traditional picnic furniture. The retro-style refrigerator is by Big Chill, and the warm-toned floors are eco-friendly cork.