Passive House is a construction concept that can be applied to all buildings, whether residential or commercial. The voluntary standards are performance-based, with a limited prescriptive option for certain scopes. States in the NEEP region such as New York and Massachusetts incorporate Passive House standards as alternative compliance pathways and/or requirements in their stretch energy codes, and other states are considering this approach as one strategy for achieving their carbon reduction goals. The following resource introduces passive building concepts, explores Phius (formerly known as Passive House Institute U.S) options, and provides links to additional Phius resources to further educate states, jurisdictions, builders, homeowners, and energy efficiency advocates. It also addresses the availability of incentives for Phius compliance and the use of Passive House principles in affordable housing.