The paper presents the results of research on the use of silicatization methods to improve the physical and mechanical properties of loess soils during construction in seismically hazardous areas. It was found that the silicatization of loess soils increases their seismic resistance, and under the studied regional conditions, the effect of silicatization is significantly higher. Certain advantages of the investigated methods and the possibility of their widespread use in the preparation of foundations for construction or their strengthening in the built-up area in seismically hazardous areas are revealed.