LEED is the most widely used green building system in the world. LEED provides tools that clearly lay out the sustainable criteria for a building project. LEED is being implemented more and more every day, as is shown by its 36,835 LEED certified projects constructed between January 2017 and December of 2021. These numbers give a glimpse into the amount of companies and people striving to minimize their carbon footprint on the world. Not only are green buildings growing in popularity by clients, but architecture firms are seeking to design with sustainability in mind as well. LEED primarily focuses on the impact the building has on the environment and less on the impact the building has on the people within it. This is where WELL comes in. The WELL Building Standard was designed to work with LEED buildings to better people’s health and wellness. It too provides a list of criteria as to how to best achieve WELL certification. Both LEED’s and WELL’s list of criteria and considerations, to achieve certification within their programs, are vast and apply to all building and construction typologies. That being said, both programs are geared to be more easily implemented into new builds rather than existing buildings or adaptive reuse projects. This subsequently makes getting, an adaptive reuse building, LEED and/or WELL certified less desirable. The research documented in this article seeks to understand all criteria considerations within both LEED and WELL and create a methodology that shows how to best implement those considerations within an adaptive reuse project.