In a world grappling with unprecedented challenges, the Sustainable Development Goals (SDGs), adopted by the United Nations General Assembly in 2015, to be achieved by 2030, stand as a beacon of hope, envisioning a future where prosperity, equity, and environmental sustainability coalesce. As the outcome of the 2023 SDG New York Summit (18-19 September) showed, the path to achieving these ambitious goals remains uneven, with persistent gaps in poverty eradication, climate action, and other critical areas. While legal frameworks, such as national development plans and international treaties, play a role, integrating the SDGs into the very foundation of governance –the constitution –offers a potentially powerful solution. Elevating the SDGs to constitutional principles grants them binding legal force, making governments accountable for their implementation. Additionally, integrating human rights and environmental protection principles embedded within the SDGs strengthens existing constitutional guarantees and opens avenues for legal challenges against unsustainable policies. Domestic policies must align with these ‘constitutionalised goals’, leading to a more holistic approach to sustainable development.