Housing problem in Egypt is an exacting problem facing all segments of society; it has accumulated over ages due to the economic, social and political conditions in Egypt since mid-twenties. By 2005, the National Housing Program (NHP) was announced, in order to accommodate the rapid population growth. However, the Governmental housing projects in Egypt did not meet all the housing requirements especially for the limited income groups either in number or quality. Whereas housing problem is not the number of units needed but also the problem of how to provide good environment respecting the social and cultural characteristics of the community. This paper aims to consider the effect of architectural design on the thermal comfort and saving energy in Building your Home project; as one of the main pivots of the National Housing Project. Research study on low-income housing experiment in New Beni-Suef City for enhancing the efficiency of architectural saving energy design with respecting economic, social, and environmental costs using Design Builder simulation software to transforming low-income housing by achieving citizen comfort and improving energy efficiency.