Reshaping Engineering requires those of us who create the built environment to change what we do and how we do it. This re-learning process requires us to engage with society, education, entrepreneurship and practice, welcoming the feedback loops that continually show us lessons learned. Designers are trained to be practical problem solvers, but designers also need to be systems thinkers, combining their analytical skills with a broad understanding of how it all fits together in society and the built environment. The built environment is complex and so is sustainability. Our team is proposing a hierarchy of needs approach to help establish levels of understanding and skills to build on top of each other to make sense of the complexities of sustainability. To move up in the hierarchy of needs, the previous sustainability need must be met. This new model represents a taxonomy of sustainable practice and allows all of us to understand both where we are and what might be possible. The needs being met on each level of the pyramid through learning and action will not just impact engineering practice itself on a practical and physical level by creating a sustainable built environment, but it will reach three more global themes through intrinsic links to society, education and entrepreneurship. As phycologist Maslow outlined in his Hierarchy of Needs framework, humans have different levels of need. In the same way he suggests these levels of need must be met for a human to thrive, there are levels of need to be met for a built environment to thrive sustainably. For so long we have been focusing on the basic survival needs of the built environment, but this is no longer the case. We need a built environment which is globally responsible, meeting the needs of the world rather as well as the individual, without exceeding the capacities of our planet. Maslow’s Hierarchy of needs has a base and summit which each cannot stand alone and must work together. To be a whole pyramid we need the base foundational needs of understanding and responsibility to support the summit of upward direction to inclusivity and regeneration. At the base of the pyramid lies a baseline understanding the definition of sustainability, its complexities, and how the principle manifests itself in different applications. An important part of the base level is understanding why engineers have a global responsibility to incorporate sustainability in everything we do. Without this purpose and need, engineers can find themselves asking - Why are we doing this in the first place? Why is it important to me? Once we understand and are responsible, we are no longer unsustainable. The summit level assesses vulnerabilities and uncertainties, to establish security and safety. Once the two foundational sustainability needs are met, the next step is forming community and belonging - understanding that we cannot improve sustainability alone and a sustainable built environment must be equally accessible to all. It’s within this summit level that we take the positive actions to being sustainable which ascends us further up the pyramid. In our Reshaping Engineering Pyramid, practitioners must meet the needs of the built environment by moving through different levels of understanding, skills and action. The ultimate goal is to reach our full potential in engineering and reshape the built environment into a regenerative system, one which enhances our resources rather than depletes them. Meeting the needs of each level: Conscientious (*) Being aware of harm - Having an awareness of the high priority needs of all people and the planet and the importance of sustainability. Responsible (-) Doing less harm - Considering consequences and putting global responsibility at the core of engineering. Equitable (0) Doing no harm - Including and respecting all needs, opinions and perspectives throughout the engineering process. Regenerative (+) Being generous - Restoring resources and regenerating ecosystems. It’s important to note that like Maslow’s Hierarchy of Needs, it is possible to move back and forth in the hierarchy, the order in which needs emerge are not fixed, and we can target multiple needs at once. We also need to consider what obstructions there might be to meeting these needs. As practitioners in this pyramid, our task is to recognise where we are, and seek to continually climb to higher levels. To do this we must engage with questions of efficiency, impact and legacy and welcome the feedback loops from wider society who are the end users and ongoing developers of what we create. If we, as Engineers and Designers can ascend this pyramid, we have a chance to Reshape Engineering.