The idea of combining green building innovations with affordable housing needs is new in some ways but the general overlap of interests is well established. This report provides an overview of the concept of “eco – affordable housing” and identifies significant opportunities for adoption of green building innovations within the affordable housing sector. Several examples are included to illustrate the intersection between green and affordable within and outside North America, including China, where housing is a major challenge. As the interest in green building and the need for affordable housing continue to grow both domestically and internationally, building bridges between the two areas is likely to increase the impact of both.