This document discusses strategies for making existing hotels more sustainable through refurbishment. It outlines key considerations for sustainable hotel design like location, building envelopes, materials selection and more efficient mechanical and electrical systems. A step-by-step approach is proposed that involves assessing the building baseline, reviewing operations, establishing goals, selecting initiatives and implementing upgrades. Examples of typical upgrades that can reduce carbon emissions are also provided such as improving the building envelope, switching to renewable energy sources, and better waste management.