This document is a project proposal for a case study paper on passive design solutions used to reduce heat gain at the Belum Rainforest Resort in Malaysia. The proposal includes a concept map identifying key issues related to heat gain such as material selection, ventilation, roof structure, and building orientation. It also lists five research questions that will be addressed in the case study analysis. A 300-word summary provides background on vernacular architecture and outlines how the resort aims to minimize environmental and social impacts while providing a rich visitor experience. The proposal concludes with an annotated bibliography of two sources on climate responsive and ecologically-oriented design.