This guide is the result of a 2011 workshop put on by RMI and BOMA International to address some of the nontechnical barriers to energy efficiency in commercial buildings, especially those barriers related to split incentives between building landlords and tenants. This guide provides a framework for instituting cooperative and productive relationships between building landlords and tenants and seeks to address some of the non-technological barriers to energy efficiency, such as split incentives, tenant behavior, and transparency. Five actionable steps that are outlined in the guide are: make energy use and costs more transparent; engage building occupants in saving energy; incorporate energy efficiency in tenant fit-outs; plan ahead for deep energy retrofits; and structure agreements to benefit both parties.