“Building a Fair Transition” strives for a fair circular built environment in the Dutch province of South Holland. By 2040 South Holland aims to have built 210.000 new dwellings to meet the rapidly growing housing demand. This transition in the built environment should align with current climate agreements and be as energy neutral as possible. To meet these goals, a lot of material and renewable energy are needed. However, the current linear economy creates inequalities for current and future generations. Therefore, radical changes towards circular construction and the demolition sector are needed. At the same time, energy poverty is an issue that calls for immediate actions in order to make the much-needed transition truly sustainable. Nevertheless, the country lacks a comprehensive measurement framework that considers social aspects to address the phenomenon. The main research question is how to manage the transition in South Holland towards a circular built environment while ensuring that this transition is done in a fair way. In order to make this possible, a tremendous change in organisational structures is required. An interscalar approach is needed to create a symbiosis betweenthe regional scale and the actions needed at a local level. In this work, bottom-up initiatives are encouraged and embraced within a bigger top-down mainframe. Through an assessment analysis, the goals towards a sustainable built environment are classified into three categories: materials, energy and knowledge. These goals will strengthen the social foundation of our report and fit the ecological ceiling that all development must respect. In our work, phasing of interventions is based onthe urgency needed. In that sense, actions are prioritisedin the most vulnerable areas while pilot projects serve as the research ground for testing feasibility and potential upscaling. The most urgent areas will be addressed first according to the criteria of low liveability, building energy performance, low income and ownership status.The overall ...