In order to enable the achievement of the Irish Government’s Public Sector Energy Efficiency Strategy target to upgrade the entire Irish public sector building stock to at least a ‘B’ on the BER scale by 2030, this project provides technical services to key national stakeholders, who are responsible to design a framework for implementing a comprehensive building update programme for the public sector. These national stakeholders are responsible themselves to achieve the development of an implementation framework for the retrofit programme including project selection (technical and economic analysis), tendering processes and procurement, implementation of works and contract management, and creating the structures for monitoring and ex-post project evaluation and an assessment of the scale of investments needed and funding options to reach 2030 energy efficiency targets.