In the WELL certification process, coordination among various team members, including the project's architect, owner, and facility manager, is crucial for compiling necessary documentation. Key documents such as Letters of Assurance, professional narratives, and ongoing maintenance reports play a significant role. Letters of Assurance are formal statements provided by professionals like architects or engineers, attesting to the adherence of certain project aspects to the specified standards. Professional narratives describe the design and implementation strategies used to meet WELL standards, while ongoing maintenance reports ensure that the building continues to operate according to WELL requirements over time. These documents collectively support the project's compliance with WELL standards, addressing aspects like air quality, water quality, lighting, and more, to promote health and well-being in the built environment​​.