The small and medium commercial building (SMCB) market is diverse and large. It consists of buildings of all ages, sectors, and management regimes. Energy efficiency retrofits present opportunities that can enable buildings to improve performance, save energy, and comply with regional codes and laws. Yet, SMCBs have not seen the same penetration of energy efficiency technologies as larger facilities due to the lower expenditures on energy management, lack of customer education, perceived high risk of SMCB retrofit financing, and split incentives between the building owner and tenant. Going forward, the importance of energy savings in building management will increase dramatically. Thus, the energy efficiency retrofit market is expected to grow steadily for SMCBs, which represent the majority of buildings worldwide. Most service and technology providers have already focused their marketing and sales on the larger buildings due to the ability to generate more revenue and a shorter return on investment period. However, with the largest commercial buildings already engaged, SMCBs are the next step. According to Navigant Research, revenue in the global SMCB energy efficiency retrofits market is expected to grow from $24.1 billion in 2016 to $38.6 billion in 2025. This Navigant Research report examines the state of the global market for energy efficiency retrofits in SMCBs. The study examines the key market drivers and barriers related to energy efficiency retrofits in commercial buildings with less than 10,000 SF (small buildings) and between 10,000 SF and 100,000 SF (medium buildings). Global market forecasts for revenue, segmented by region and building type, extend through 2025. The report also examines definitions related to energy efficiency retrofits for SMCBs and provides profiles of key industry players.