This graduation project addresses the societal relevance of the increasingly urgent building envelope renovations of Post 65 suburban housing in the light of the necessary improvement of energy performance. The Post 65 aesthetic and spatial identity stands a good chance of being underexposed in the renovation practice because of the lack of public appreciation of Post 65 architecture and the still developing body of knowledge. This project shows that by strengthening and/or adding Post 65 aesthetic and spatial attributes in renovation design there is a future for the valuable Post 65 aesthetic and spatial identity. Through developing know-how for contextualist renovation design that uses Post 65 aesthetic and spatial vocabulary this projects creates guidance for future-proof renovations for a lower probability of compromised heritage values. The academic relevance of this project is characterised by the critical historiographical perspective on existing literature that discusses Dutch Post 65 architecture. The research output is a contribution to this still developing body of knowledge on Dutch Post 65 architecture.