The final qualification work is presented on 72 pages, contains 30 figures, 6 tables, 54 sources of the literature. The object of the study is low-rise house construction in the Russian Federation, Austria and Germany. The objective of the study was to compare the characteristics of radon accumulation in low-rise buildings in the cities of Tyumen, Leoben and Schneeberg. The indoor radon levels in low-rise residential buildings were measured in Austria, Germany and Russia, specifically in the basement, ground floor, and first floor. The results indicated that most of the houses examined exceeded the permissible limits by 1-1.5 times in Russia and 3 times in Germany. However, no exceedances were observed in low-rise houses in Austria. The causes of high radon levels in these residences are attributed to poor ventilation, low-quality floor concreting, gaps, loose joints, seams, and technological openings in basements. It is important for residents to take preventive measures such as improving ventilation and ensuring the building is airtight to prevent radon entry.