Plant Prefab has teamed up with UK-based Koto to launch a pair of Scandinavian-inspired prefab homes that can generate all of their own energy. The two-bed, one-bath Yksi (Finnish for “first”) and the four-bed, three-bath Piha (Finnish for “courtyard”) emphasize indoor/outdoor living with floor-to-ceiling windows, outdoor terraces, and a natural material palette.

Koto is the first international firm to collaborate on Plant Prefab’s LivingHomes line. The customizable homes are designed by renowned architects—such as Ray Kappe, KieranTimberlake, Yves Béhar, and Brooks + Scarpa—and utilize the company’s patented prefab system, which reduces build times by at least 50% compared to traditional construction.

“Our mission is to make great architecture more accessible and affordable,” says Plant Prefab CEO Steve Glenn. “To do this, we’re looking to work with the best design practices globally—firms whose missions align with ours—so we can bring their designs to life in the most sustainable and efficient way possible.”

Koto’s minimalist design approach has resulted in two simple yet sculptural LivingHomes that are primarily built from natural materials and designed to encourage environmental stewardship and connections with nature.

As with all LivingHomes, Koto’s designs follow rigorous Z6 sustainability standards. The prefabs ensure homeowner health and wellness through a careful selection of materials—such as zero-VOC paints, stains, and sealants, as well as mold-resistant drywall—and open floor plans conducive to cross ventilation and daylighting. All LivingHomes also ship complete with Amazon Alexa–enabled smart home devices and state-of-the-art energy monitoring equipment.

The focus on sustainability also extends to Plant Prefab’s patented building process, which utilizes Plant Panels—a new panelized construction system with integrated plumbing, electrical, and finish materials.

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The company also reuses or recycles 80% to 90% of its construction waste and purchases CarbonFund credits as part of its pledge to become fully carbon neutral by 2028. All Plant Prefab projects are prefabricated in the company’s 62,000-square-foot factory in Rialto, California, and each dwelling can be customized with the homeowner’s choice of finishes, fixtures, appliances, and smart home technology.

Plant Prefab’s factory is classified as an essential business under Governor Newsom’s Executive Order, and it remains open to address California’s housing needs. Price quotes for Koto LivingHome prefabs are available upon request online.

More from Plant Prefab:

Plant Prefab Just Unveiled its Most Advanced Homes to Date

Plant Prefab Unveils Scalable Homes for California Wildfire Victims

Here Are the Modern Prefab Designs That Amazon’s Investing In

More from Koto:

These Sleek Prefab Cabins Radiate Scandinavian Style

This Tiny Modular Cabin Is Just for Kids—and We’re Totally Jealous

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Plant Prefab and Koto Launch New Net-Zero Homes With Scandinavian Style