This article explores the transformative potential of Internet of Things (IoT) and Big Data in driving sustainable urban development in Chhattisgarh, India. It discusses how these technologies are enabling real-time monitoring, predictive analytics, and citizen engagement, thereby transforming cities into smart cities. The article also highlights the challenges and opportunities in leveraging these technologies for efficient resource management, improved public services, and promotion of sustainable practices. The conclusion underscores the immense potential of IoT and Big Data in creating smarter and more sustainable cities in Chhattisgarh.