BEEP and Public Works Department, Karnataka, have collaborated on various aspects of energy-efficient building design. Several design workshops were conducted to develop energy-efficient designs for specific public buildings, including the District Court and other district office buildings. The knowledge gained through these collaborative efforts is compiled and presented in this document. The guidelines have been developed keeping in view different climatic regions found in Karnataka and provides a step-by-step approach to designing energy-efficient buildings. The content of the guidelines covers details on the integrated design process, climate analysis for Karnataka, climate-responsive design, efficient cooling systems, and solar energy integration. The guidelines will be useful for architects, engineers, and building project managers.