The Long Valley Ranch two-bedroom, two-bathroom vacation home, designed by Marmol Radziner Prefab, is composed of 10 modules joined together to give the homeowners 2,203 square feet of living space. Located at the crest of a grassy knoll on 160 acres in Mendocino County, California, this L-shaped prefab frames the views of the mature oak trees that surround it.

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The main volume houses the living room, kitchen, and dining room, all of which open up southward to a covered patio and pool area. The separation between indoors and out is lost when the sliding glass doors disappear, completely extending the living space.

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A white fabric canopy extends out helping to shade a seating area beside the pool.

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The covered patio extends the kitchen area really opening up the narrow space and providing ample seating outside.

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Concrete floors are used throughout which provides passive solar heating and cooling.

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Other sustainable measures were taken including a 17-kW solar array to offset electricity usage, a tankless hot water heater to provide on-demand water heating, recycled denim insulation, and the use of low-VOC paint.

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