The building sector includes energy used for constructing, heating, cooling and lighting houses and businesses, as well as the appliances and equipment installed in these buildings. This sector accounts for a significant part of the global energy demand. Hence, lowering down the energy consumption in this sector would significantly help the countries in terms of balancing the demand and supply and freeing up the financial resources. Reducing the energy consumption requires changing daily choices in energy consumption and adopting energy efficient technologies. Many different policies can be applied in building sector in order to increase the use of energy-efficient technologies. This chapter will focus on four major policy types mostly employed in building sector: Appliance standards, building codes, incentives and, labels and consumer information.