This Toolkit supports the Green Buildings Procurement Manual developed for the Caribbean Community Climate Centre (CCCCC) in Belize. The effort was financed by the Global Environment Facility through United Nations Environmental Programme (UNEP) under the “Energy for Sustainable Development in Caribbean Buildings (ESD) Project” which was financed by a US$4, 859,000 GEF grant. The Toolkit first reviews the current state of the art represented in the Manual. The purpose is to provide a quick reference for comparison among Member States. Next, the Toolkit presents the operational definition of Green Building Procurement as develop in the Manual. This is followed by a detail explanation of the concept of Life Cycle Cost analysis as a decision framework for choosing the best projects. Two software tools are recommended for energy analysis as well as two benchmarks for product prices. Finally, the same Specification Tables in the Manual are reproduced here in the Toolkit.