This case study investigates the environmental impact of constructing a new condominium in Calgary, focusing on sustainable development and environmental stewardship. It explores the goals of sustainable development, emphasizing the need to minimize negative impacts and optimize positive ones across environmental, economic, and social dimensions, considering stakeholders like owners, consultants, and the local community. The study outlines recommendations such as preparing a project sustainability management plan, prioritizing pollution aspects, implementing energy-efficient systems, and adhering to guidelines like ECO and LEED. It also addresses waste and water management, risk mitigation, and stakeholder consultations. The report then analyzes environmental issues related to construction, including energy efficiency, hazardous material and waste management, dust and noise pollution, and water consumption. The study compares the environmental factors of constructing a condominium with a natural gas pipeline and a hydrogen pipeline, highlighting the varying impacts and mitigation strategies for each. The study concludes that the construction of a condominium has these environmental effects, Energy Efficiency, Hazardous Material & Waste Management, Dust & Noise Pollution, and Water Consumption & Usage, where these can be mitigated to reduce the environmental footprint. The environmental factor differs if we were to construct a natural gas pipeline. Then the effect on environment will be air & noise pollution, leakage, spillage, greenhouse gases and loss of vegetation. For using hydrogen