Healthy buildings and superior air quality are increasingly important since people now spend so much time indoors. Indoor spaces drive performance and productivity. Commercial real estate landords and investors are responding to the demands of sophisticated tenants and end users by making investment choices around indoor air quality and certification, and related expectations for increased rent or increased occupancy. It's anticipated that these learnings will extend to other situations including offices, schools, hospitals, factories, and homes. This case investigates the tradeoffs in several engineering, marketing, and finance decisions. The setting is a billion dollar premier new office building on Park Avenue in New York City, designed by the eminent architecture firm Foster + Partners. The decision factors in the case include health information from CogFX and 9 Foundations of Healthy Buildings research from the TH Chan Harvard School of Public Health.