This paper focuses on the green urban development paradigm. Its inspiration is the work of the Global Green Growth Institute (GGGI). It cites perspectives developed by GGGI HQ in Seoul, Korea, enriched by its praxis in Uganda. The latter is through the European Union (EU) funded project, greening urbanisation and industrialisation (2020-24). The argument is in five sections, beyond its introduction and conclusion. Firstly is the green policy impact with an urban bias. Secondly is the green practical impact, explicitly urban, from a responsive institutional perspective. Thirdly, the responsive description is taken to the smart city idea. Fourthly is infrastructure, specifically its shaping or reinforcing urban form. Finally is superstructure-in this case, green buildings. Each section is offered as a step towards a greater appreciation and potential application of green urban development.