Canadian-based GreenTerra Homes manufactures steel frame homes for assembly on-site, as well as steel frame factory-built modular homes and structures. They are Canada’s first and only CWB CSA QAI certified steel frame modular home factory, with a mission to make it easier for families to build the home of their dreams—from how GTH homes are built, to the materials used in construction to the support team at your side.  Photo 10 of 11 in 10 Kit Home Companies to Watch