The homes actively avoid the direct use of fossil fuels—such as gas for heating—and utilize electric-based systems that enable use of renewables for on-site generation. “We also tend to approach projects with a ‘fabric first’ mentality whereby Koto buildings are designed with high-performance envelopes that limit the amount of energy required for services such as heating, cooling, and lighting,” says Theo.  Photo 9 of 11 in Favorites by David Allen from This Prominent U.K. Prefab Builder Is Scaling Up From Cabins to Custom Residences

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The homes actively avoid the direct use of fossil fuels—such as gas for heating—and utilize electric-based systems that enable use of renewables for on-site generation. “We also tend to approach projects with a ‘fabric first’ mentality whereby Koto buildings are designed with high-performance envelopes that limit the amount of energy required for services such as heating, cooling, and lighting,” says Theo.