This study aims to investigate the energy-saving potential in the housing sector and encourage the employment of energy-efficient applications in Turkey by adapting the current European building techniques, policies and building standards in the Turkish system. First, the building standards applied in Austria and Turkey were comparatively discussed. Secondly, an energy performance analysis was performed using a PHPP Tool (Passive House Planning Package) and Konya climate data to study a typical detached house in Konya. Several optimisation scenarios that apply the Austrian regulations were conducted to form a base case Scenario. As a result, the energy and greenhouse gas emission reduction potentials, which can be provided using Vienna’s building code considering the structural practices and energy techniques, were revealed. The findings shed light on how the building standards and structural practices can contribute to economic and ecological balance. Consequently, the study emphasises revising the Turkish building standards and improving the current policies to ensure high-quality and sustainable housing designs.