A $10 million building requires approx $40 million in maintenance costs over its…2015-05-072015-05-07https://www.oksustainability.org/wp-content/uploads/2019/08/osn-logo_blackbg_crop2_title.pngOklahoma Sustainability Networkhttps://www.oksustainability.org/wp-content/uploads/2019/08/osn-logo_blackbg_crop2_title.png200px200px