Over the decades, the kit homes ranged in price from $3,000 to $10,000 depending on the size, design and scope. The companies also sold garages, boilers, chicken coops, bathtubs and built-in shelving.

Plant Prefab’s Nest LivingHome toolkit includes multiple options for designs that can be built on unused lots throughout a city. “In the last 10 years, there’s been this kind of unprecedented increase ...