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The study is based on analyzing and investigating two different house models, a passivhouse and a conventional house. This study is aimed at investigating the future possibilities for the development of residential buildings. In the study, both the energy consumption of the house models, the environmental impact and the technical factors are analyzed. 

The method of the work is presented by processing scientific reports, literature studies and a case study of two different projects to strengthen the purpose and goals of the study. The work is also based on performing calculations, this to highlight different values and support the works comparison of environmental impact and annual energy consumption between the two different house models. 

The result shows that the annual energy consumption is significantly higher for the conventional house than the passive house. The factors that prove this are the insulation, heat loss, ventilation, heat recovery, energy efficiency, doors and windows as well as heating systems and solar cells which are the biggest difference between both house models. The result for annual energy consumption was 3710 kWh per year for the passive house and 13379 kWh per year for the conventional house. The results prove that the investigation of the energy performance is done by calculating U-value which leads to comparison between the heat losses through each element. The result proves that the difference in heat losses in passive houses is 65% of the heat losses in the conventional house. To find out the environmental impact during the use phase, carbon dioxide emissions for both house models were analyzed through calculations. The result proved that energy consumption causes carbon dioxide emissions, with passive houses emitting 0.198 tons during the use phase and the conventional house emitting 1.204 tons per year.

Finally, this study clarifies that passive houses are the better option for the housing construction of the future, when it comes to the usage stage to meet future energy requirements and achieve the goals in 2030. Since passive houses are becoming increasingly energy efficient and are finally the sustainable solution for a future-proof housing construction from an environmentally friendly perspective, this results study that passive houses are the right choice going forward.