Not content with merely practicing green architecture and design, McLennan has been instrumental in creating the very tools and systems that are shaping the entire movement.

McLennan is the author and founder of the Living Building Challenge – the most stringent green building standard in the world.
www.livingbuildingchallenge.org

He is also the designer and creator of the Pharos Materials protocol -the most advanced and holistic materials evaluation system ever created – taking a 360 degree view of the issues surrounding materials choices in the built environment.
www.pharosproject.net