The document summarizes 5 emerging trends in green building: 1) Building commissioning and monitoring to improve building energy performance, 2) Integrated design processes to make efficient decisions early in design, 3) Issues around water usage and conservation, 4) Making cities more resilient to threats like climate change and peak oil, and 5) Implementing smart grids and appliances to optimize energy usage. Each trend is briefly described along with some challenges to address in each area.