The Sustainable Design Toolkit from Hertfordshire Building Futures (2014) aids decision making on sustainable design at the initial concept, pre-planning and planning application stages for development in Hertfordshire.

By using open questions and best practice guidance, the Toolkit helps development stakeholders consider and implement the principles and practice of sustainable design in a highly visual, intuitive and engaging way.

http://www.hertsdirect.org/statweb/interactivetoolkit/