Retrofitting old buildings to make them seismically resilient and durable is a better option rather than demolishing them. It is also a good method for safeguarding the structure from dynamic loads. There are numerous local retrofitting options, most of which include jacketing. According to literature surveys, carbon fibre-reinforced polymers (CFRP) for jacketing are growing in popularity. This study focuses on CFRP jacketing as a local retrofitting solution, examining its benefits and drawbacks for low- to medium-rise reinforced concrete open-ground storey (RC-OGS) buildings. Several parameters are employed to define structural behaviour, including base shear, drift ratios, inter-storey drift (IDR) and so on. Numerical validation of the experimental work, which includes a half-scale single-bay two-storey experimental CFRP retrofitted frame specimen, was performed to carry out these works numerically, and the results were in good agreement with the experiment results. The dynamic study demonstrates that the local retrofitting technique performs better when base shear, drift ratios, IDR and other factors are taken into account, but it is ineffective when it comes to the total structure's energy dissipation capacity at the global level. The nonlinear static analysis demonstrates that in medium-rise structures, the retrofitted non-ductile structure just moves damage from the ground level to the first floor rather than fully following a pre-defined failure mechanism. Furthermore, removing these issues in conjunction with other retrofitting solutions is a future scope of our work.