E Expansive soil is a type of soil that changes in volume due to changes in moisture content, and can have a direct impact on buildings such as damage to building structures to the failure of building structures so it is important to identify the degree of development in expansive soils. there are several methods commonly used in identifying the degree of development in expansive soils. this study aims to identify and compare the degree of development of expansive soils using three approaches, namely, the classification of physical properties based on the criteria of van der merwe (1964) and chen (1965), and the free swelling index (fsi) method based on is 2720-40:1977 which uses soil physical parameters. samples were taken from four different locations in the karawang, cikarang, tangerang, and sentul areas and then tested through laboratory tests including specific gravity, grain size analysis, atterberg limits, and free swelling index (fsi). the results showed that the classification of the three methods showed different degrees of development because the three methods have different parameters. the correlation between fsi values and soil physical properties such as ll, pi, f200, and clay content showed a certain pattern, but it was not unidirectional and inconsistent across samples. this shows that the three approaches have different indicators and classification approaches, so the results are not always interconnected.this shows that the three approaches have different indicators and classification approaches, so the results are not always interconnected but can describe the degree of expansive soil development from various parameters.