Rodwin Architecture and Skycastle Homes Location: Boulder, Colorado, United States The design of this 4500sf, home….the steeply-sloping site; we thought of it as a tree house for grownups. Nestled into the hillside and surrounding by Aspens as well as Lodgepole and Ponderosa Pines, this HERS 38 home combines energy efficiency with a strong mountain palette of stone, stucco, and timber to blend with its surroundings. A strong stone base breaks up the massing of the three-story façade, with an expansive deck establishing a piano noble (elevated main floor) to take full advantage of the property’s amazing views and the owners’ desire for indoor/outdoor living. High ceilings and large windows create a light, spacious entry, which terminates into a custom hickory stair that winds its way to the center of the home. The open floor plan and French doors connect the great room to a gourmet kitchen, dining room, and flagstone patio terraced into the landscaped hillside. Landing dramatically in the great room, a stone fireplace anchors the space, while a wall of glass opens to the soaring covered deck, whose structure was designed to minimize any obstructions to the view.