ECE aims to achieve various sustainability objectives: a considerate use of building land, re-use of areas, durable and flexible use of the building, seamless modification and demolition, if necessary, the use of environmentally-friendly and health-friendly substrates and material, a comprehensive materials management, and an efficient use of energy. Realising these objectives means hard work in detail. The persons responsible for sustainability have already launched a number of measures. Other matters still need to be improved. ECE endeavors to operate more sustainably and more environmentally friendly.