Abstract Delta Terminal owns an outdated industrial building which they now rent out to businesses. This property currently has a high energy con-sumption and therfore it is desirable to improve the efficiency. In ordet to reduce the energy consumption within the industrial building enve-lope, the heating systems and lighting are being investegated. A good building envelope emits less heat and thus reduces the energy consump-tion. An energy audit is a tool used to determine the energy loss. A good working environment is essential for customer satisfaction when indus-trial buildings are used as offices. The investigation was carried out through a literature review, oral sources and interviews with tenants. In order to improve the condition of the industrial building from its current situation, a poll based on the View Capture model has been implemented. The model is based on open questions put to the tenants. Worke has been conducted with regards to the problems and sugges-tions for improvement have been developed in appropriate and profita-ble actions. Using regression analysis, the internal rate of return and break-even method has been developed for energy efficiency measures. To implement a new pellet system, a ventilation system and the re-placement of both the lighting and interior windows will provide an industrial building with a more efficient standard. To increase customer satisfaction, new sealing stripes and a refreshment of the common spaces is also recommended. The investigation shows that certain investments meet both energy efficiency and customer satisfaction. The investigation regarding the recommended measures for industrial property was relevant. The objectives of the investigation have been met. Keywords: Efficiency, customer satisfaction, energy