Concrete is considered a durable material but it is still potentially vulnerable to deterioration unless certain precautions are taken. The assessment of concrete structures consists of not only an evaluation of the present condition but also a prediction of the cause of deterioration and its residual life. A number of tests need to be carried out to assess the extent of distress and to estimate the quality of concrete, before taking up any repair measures. This paper discusses the assessment of RCC building by using Non-Destructive Testing. The main aim of the paper is to highlight the importance and significance of different test methods employed to assess the present condition of the RCC structure.