About 3 billion people, or 40 percent of the world’s population, will need new housing by 2030. That will require constructing approximately 21 million new homes every year across the world.
The choices of where and how affordable homes are constructed and maintained can make the difference between improving quality-of-life for low-income and vulnerable families, or further burdening them with costs and social isolation. One critical choice is the efficiency of the housing. Energy-efficient housing is more affordable over its lifetime than non-efficient buildings. And when benefits beyond direct costs are accounted for—like improved health, increased productivity, new jobs and less pollution—the benefits outweigh the costs many times over.