Legislation is among the strongest accelerants of high-performance home building. When building codes require zero-energy construction, or 100% renewable energy sources across residential housing, homeowners and builders are forced to adopt design and building practices that fall into compliance. “Policy Watch” documents evolving legislative measures to help inform homeowners, designers, builders, and construction industry leaders facing the challenge of building in new ways, to new standards. The objective is to keep pace with ever-changing building information needs by tracking policies that impact performance-minded designers, builders, and industry stakeholders.