Brünjes, Katrin2026-05-122026-05-122025https://hdl.handle.net/20.500.14938/1279Contemporary construction practice is undergoing a fundamental shift away from demolition and reconstruction toward the transformation of existing building fabric. This article introduces the concept of "composite practice" as a design methodology that responds to ecological imperatives by treating existing architectural elements as active design parameters rather than constraints. Drawing on two case studies; the renovation of a 1908 Berlin apartment and the conversion of a 1940s twin farmworkers' house into a community dwelling; the article demonstrates how preserved fragments, repurposed components, and layered materials can be orchestrated into coherent spatial assemblages. The iterative, in-situ design-build process that composite practice demands supplants the conventional linear sequence of office-based design followed by on-site construction, instead merging these phases into a dialogical collaboration between architects, builders, and the existing structure. Informed by the concept of the palimpsest, composite practice reframes apparent inconsistency and material heterogeneity as compositional assets, challenging Albertian ideals of architectural wholeness in favour of an open, adaptive approach that acknowledges the built environment as perpetually unfinished.enArticle