Abstarct: Taroud region is located in the desert margins, at 120 km south-east side of Shahroud. The heterogonous sinking of structures, fractions in the walls, and ground subsidence caused lots of damages to the buildings and access roads which have influenced local people's lives. There are several viewpoints about reasons of these problems. One of the strongest theories in this regard, considers the problematic soils (swelling, divergent, or liquefaction soils) in the region as the cause. The problematic soils bring about various technical troubles in construction projects. In recent years, the population growth and increasing demand for accommodation as well as development of building industry while neglecting geological and geotechnical issues have often resulted in such problems. The current research tries to realize the soil problem types through field investigations and a number of geotechnical tests on the local soil. For this purpose, six deep wells were dug with the depth up to 3 meters and twelve intact samples were taken from the local soil; then, the relevant tests considering evaluation and determination of problematic soils were carried out; including chemical tests, grading tests, the standard testing procedure of soil grading, the standard testing procedure of clay soil divergence by double hydrometer method, the standard procedure for determination of swelling or one-dimensional sinking of adhesive soils, the standard procedure for determination and grading of divergent clay soils by pinhole testing method, and crump test. Ultimately, after completion of all above-mentioned tests and study of indices and results, it was found out that the local soil has a low swelling and liquefaction potential; thus it is not regarded as problematic. However, it has a moderate to high divergence potential which has led to the existing problems in the buildings and access roads.