Deltec Homes' philosophy of environmental protectionism begins at the factory. With 273 solar panels installed on the roof of the production facility, the company produces each home with 100-percent renewable energy. Deltec Homes also fosters a goal of zero landfill waste and currently diverts 80 percent of it away from the landfills by donating scrap wood to Habitat for Humanity and local organizations, Apple Country Woodcrafters and Wild South. Photo 23 of 24 in 24 Top-Tier Prefab Companies for Every Kind of Home Buyer

24 Top-Tier Prefab Companies for Every Kind of Home Buyer

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Founded in 1968, Deltec Homes is known for hurricane-resistant, energy-efficient homes, offered in round, traditional, and modern prefabricated kits. The round structure provides better airflow while reducing surface area, reducing heat gain and loss. "The shell is so efficient that we haven't turned on our central heating system for the main bulk of the winter in three years," says the owner of this Pennsylvania property.