The outPHit project aims to support building owners and housing companies in performing reliable, quicker and more cost-effective deep retrofits. Working on and collecting findings from real refurbishment projects, outPHit will promote renovation concepts like the Energiesprong approach or one-stop-shop solutions, but in highly efficient quality to NZEBs in EnerPHit standard, to stakeholders among neighbourhoods, municipalities, financing institutions and the building supply chain. It will lay the ground for regional players, particularly SMEs, to enter the market as providers of innovative out-of-the-box solutions, either consisting of conventional renovation concepts or of highly efficient prefabricated systems. While the focus is on residential buildings, most of the proposed approaches will also apply to non-residential buildings, thus widening the scope to educational and office buildings.