Urbanisation is accelerating at an unprecedented rate, and the need for sustainable urban planning has never been more critical. As cities expand, governments, planners, and developers are turning to technology to ensure efficient, eco-friendly growth. At the forefront of this transformation is the Online Building Plan Approval System (OBPAS), an innovative tool that simplifies urban planning and supports the vision of smart cities. This blog explores how OBPAS is contributing to sustainable urban development and how smart cities are leveraging this technology for a greener future.