Abstract
The contribution follows on from two previous researches, which dealt with the influence of the orientation of the construction of catalogue family houses from the point of view of CO2 production during their operation. The previous research was focused on family houses (orientation of windows on all sides of the world) and terraced buildings (orientation of windows on two opposite sides of the world). The contribution in question is focused on family houses on a slope with one-sided orientation of the windows, which is the final phase of the research. The main reason for the overall research is the fact that developers are currently trying to realize the same type of family houses (catalogue houses) regardless of which side of the world the exposed glazed areas of the house are oriented. For this reason, the approval and energy certification often do not reach A0, which is a mandatory requirement of the energy assessment of buildings from 1 January 2021. The environmental impact research compares four basic types of streets with ten identical houses. The environmental impact research compares four types of basic streets with ten identical houses. if it is a comparison of the environmental impact of the same development of family houses on a slope, with different orientations to the cardinal points and with different local houses within the streets. The benefit of the research for practice will be the formulation of principles for the orientation of transparent areas in residential construction and the formulation of urban planning principles for the siting of houses in settlements on sloping terrain, where it is possible to place windows only on the front facade.