When most Americans imagine a home, they picture a wood-framed house. But in an era of high housing costs and extreme weather ...

A modular, precast system of concrete 'rings' can be connected in different ways to build a range of models of energy-efficient homes. Pablo Moyano Fernández, CC BY-SA Wood is, by far, the most ...

The house consists of a modular, precast concrete system of “rings” that can be connected to form the entire structure – floors, walls and roofs – creating airtight, energy-efficient homes.

Since they're built using durable concrete forms, the house can be easily mass-produced. When precast concrete homes are mass-produced, the cost can be competitive with traditional wood-framed homes.