Union has adopted a green building policy and all renovation specifications are now required to include green building practices and materials. New building projects are required to meet LEED Silver certification standards, at a minimum. Three buildings are qualified as Energy Star buildings. Additionally, the college has renovated one of its apartment houses as a sustainable living lab, including water reclamation, solar power, green construction and plant material, low-flow toilets, and computer-monitored metering for students to use for energy use comparison.