This early-20th-century A-frame feels inseparable from the hillside landscape, thanks to its private Altadena setting, sheltered by old-growth oaks. Known as Boulder Crest, it was originally built from massive granite boulders quarried on site — an architectural gesture that ties the home directly to the San Gabriel foothills. Its character sits somewhere between Arts and Crafts and California modernism, with stone, redwood and canyon light grounding the experience of place.

Inside, the 2,942sqft plan moves across stepped levels and long sightlines. A vaulted living room set beneath post-and-beam ceilings anchors the ground floor, framed by a floor-to-ceiling stone fireplace and a wall of windows that opens to oak canopies. Adjacent are the dining room and kitchen, defined by rock walls and clerestory glazing. The level also holds a bedroom and a den, while a river-rock bath continues the house’s emphasis on honest, tactile materials.

Upstairs, an art studio looks across the canyon and connects to a private patio, with the primary suite set behind shoji screens and oriented toward the pool terrace. The 2.75-acre site includes a workshop, wine cellar and two-car garage. It’s listed for $3.2 million.

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