David Johnston has been in the construction industry designing, building, and consulting on environmental construction for 30 years. He was a former builder and founder of Lightworks Construction, Inc. in Bethesda MD. He was named Builder of the Year by the Washington, D.C. chapter of the National Association of the Remodeling Industry and inducted into the Remodeling Magazine Hall of Fame as one of the Top 50 builders in the country. Johnston has been at the forefront of the Green Building initiative since 1993 when he founded What’s Working and became the original designer of the Denver Metro Home Builders Association’s Built Green Program. This is the most successful local program to date, certifying over 4000 new homes per year and evolving over the years as experience with green building has matured. David is also the main designer and consultant to the Alameda County Waste Management Authority’s program which has become the template for all other effective building market transformation programs in the San Francisco Bay Area. In addition to co-authoring numerous green building programs, Johnston has presented his expertise across the country and internationally to groups including realtors, builders, developers, city/state officials, civic organizations, utilities, universities, and non-profit organizations.