A smart city in general is a very wide socioeconomic urban technical phenomenon that inherently represents an increase certain quality of the urban environment and organism. It is not only a technical and technological level of development of infrastructure of a city, but constitutes mainly intellectual maturity and awareness of all stakeholders of the urban organism. Topic of Smart Cities is gaining exponentially in importance, as the socioeconomic and demographic changes creating new trends, needs, requirements and challenges for existing urban areas, inner urban processes and their management. There are already a number of applied strategies, which proves the efficiency and sustainability of the solutions. In this contribution authors are trying to outline the problematic areas of Bratislava to achieve Smart City concept, whereby they take inspiration from the neighbouring city of Vienna and Amsterdam, which in turn are considered as some of the top smart cities in Europe.

The goal of mentioned contribution is to moderate the unwanted effects of economics on environment in the form of more purposed economy with material sources from recycling, collection, separation and processing of returnable products. It is a global trend nowadays to lower waste production and to minimize effects on the environment. We are going to deal with effectiveness of partly underground containers in Slovakia and new trends about possibilities of other uses of PET bottles. The article deals with the analysis of whether the level of waste management services is at the required level due to the wide range of services provided within reverse logistics. Article’s output is created model of reverse logistics and subsequently analysis of cost effectiveness considering economic aspects entering into the reverse model has been made during its use.

The current global trends lead to fulfilment of specified environmental and economic objectives in all sectors of national economies. Buildings form a basic pillar of smart cities concept where all life processes and nerve centres of social life are read, in order to radically improve quality of life, opportunity, prosperity, social and economic development, thanks to the use of the new technology. The building sector has been identified by various studies as a sector that offers considerable potential for the cost-effective reduction of greenhouse gas emissions, making it an important field for climate protection action. A significant role towards realizing these objectives has in particular the implementation of the latest technologies and technical procedures in all processes at all levels. Smart buildings are no longer considered individually, but as a part of complex ecosystem. They must be adapted to the expectations of future users if they are to be properly used. This paper deals with the problematics of current technological, environmental and economic trends in renewal of residential buildings.

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