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The activity concentration of natural radionuclides and ²²²Rn (Radon) exhalation rate in soil samples were determined using NaI gamma detector and Scintillation based Smart Radon Monitor (SRM). Soil samples were collected from different geological formations of the same area. The concentration of three radionuclides (²²⁶Ra, ²³²Th and ⁴⁰K) in the studied area has been varied from 25 Bq kg^− 1 to 48 Bq kg^− 1, 28 Bq kg^− 1 to 47 Bq kg^− 1 and 356 Bq kg^− 1 to 598 Bq kg^− 1 respectively. The average value of ²²⁶Ra (Radium) equivalent activity in soil samples of the studied area was 125 Bq kg^− 1. The ²²⁶Ra equivalent activities of soil samples have been calculated to assess the radiation hazards arising due to the use of these soils in the construction of dwellings. The exhalation of ²²²Rn from the earth's crust and building material are the main source of ²²²Rn in indoor environment. The ²²²Rn exhalation …