This research examines the influence of the Makassar New Port (MNP) on urban development in Makassar using a mixed-method approach. While previous studies on port development have largely focused on macroeconomic outcomes, limited attention has been given to the localized socio-economic impacts on surrounding urban communities. This study addresses that gap by assessing how MNP infrastructure—specifically road networks (X1), piers (X2), and port offices (X3)—affects urban growth and coastal community development. The findings show that MNP contributes to 52.3% of the observed improvements in socio-economic conditions, with the remaining 47.7% shaped by external factors. Road network development (X1) and port office construction (X3) emerge as significant drivers of positive change, while pier construction (X2) shows little measurable effect. Overall, the study highlights that the operationalization of MNP not only facilitates trade and investment but also stimulates the growth of supporting infrastructure such as roads, warehouses, and commercial areas, thereby reinforcing Makassar's position as a strategic urban hub.