Like LEED, WELL operates on a scoring system in multiple categories, including air, water, and light. Some features are preconditions for certification, while others are optimizations. Depending on the number of features that pass, a project can be certified as WELL Silver, Gold, or Platinum.
WELL is quickly becoming an unstoppable force. In summer 2017, just 2.5 years after launch, there were 100 million square feet of projects completed or in progress worldwide. As interest has grown in healthy environments, the next 100 million will undoubtedly come even more quickly.