Perched above the westbound lane of the Highway 26 tunnel, Arrow House will provide unparalleled views of downtown Portland and Mount Hood. ADW was engaged to create a unique concept that would push the envelope of modern residential design while paying homage to the traditional composition of hillside residences. The design aims to redefine the traditional gable roof with long cantilevers and stepped peaks that incorporate ecological conscious decisions including vegetated roofs and solar panels. Clerestory windows oriented to the south are set between the roofs and combined with the interior slope of the northern roof maximizes the penetration of natural light into the primary living spaces of the residence. The lowest habitable level is a second unit which can be utilized as a mother-in-law suite or rented as separate unit. The unique constraints of site topography and public access ways guided decisions on site circulation including a 5 stop elevator. Privacy goals for neighboring properties as well as the acoustics of the highway traffic translate into the design elements including use of dense organic materials to minimize sound transfer and rebound while also providing the desired material pallets. Location of the stairwell and south facing windows stemmed from privacy considerations and to impact the penetration of natural light. Use of exposed wood and steel provide a timeless sense of connection to the world we live in and homage to the timber legacy of Oregon. Extensive fenestration through windows and accordion doors ensures eastern views are unencumbered while the formal dining room is located within a cantilevered structural glass volume.