In building or retrofitting affordable multifamily housing, owners and developers committed to sustainability have several certification metrics to choose from, depending on their goals, budget, and practicalities. In this moderated panel, three experts will examine the benefits and challenges of the metrics they chose for their projects: Enterprise Green Communities, Passive House, and Zero Net Energy. Through case studies, our panelists will discuss the motivating factors behind each chosen metric, impacts on the design and construction process, and resulting performance. They will also cover lessons learned, common misperceptions, the challenge of introducing renewables into a project, and the pros and cons of obtaining full certification versus "certifiable" status.