Ken Semler points to a man carefully sealing the frame of a house with foam as evidence that this factory can build houses faster, cheaper, and better than traditional homebuilders. “There’s no way you can do quality work in the field to the level you can in the factory,” says Semler, president-elect of the Modular Home Builders Association. The term “factory-built housing” might conjure the image of the small, boxy trailer-like home that sprung up to help address the housing crisis after World War II. But the modular homes manufactured here are indistinguishable from the site-built homes in the neighborhoods they end up in. Factories like this one may be the key to solving America’s affordable housing crisis. Read more on modular homes at the link in our bio. Photographs by Evan Angelastro (@evan_angelastro) for TIME