Building Arts Workshop (Jeff and Tracy Prose) are those why created The Orchid Street Cityhomes. These houses are not typical duplexes. They share a common wall, a garage and bamboo-filled courtyard. Both units are done in blend of wood cladding, masonry, glass, and slanting roofs and have two stories. Sense of calm could be felt as inside of homes as in their courtyard. Both homes have clean, contemporary interior design with tons of natural light. The first floor of each of the houses is open from the front to the back, and the second-floor rooms are arranged around this central two-story space. The dining area is the heart of the home, anchoring a double-height space onto which the upstairs hallway looks out. A lot of environment friendly techologies are implemented in these homes designs. A rain-screen wall filters rainwater, radiant heating warms surfaces, HRVs draw in fresh air, which is filtered and heated before being released inside and so on. The duplex is situated in Southwest Portland. [Building Arts Workshop]