The necessity of sustainable and circular practices in the construction sector is gaining relevance, particularly with regard to the existing building stock. The challenge lies in not just formulating these concepts theoretically, but in implementing them in practice. A key concern for the industry is to demonstrate how such approaches can be concretely realised in existing buildings.
It is noted that the foundations for a comprehensive understanding of this topic are already in place. This includes both theoretical knowledge and practical instruments that enable the assessment and planning of circular processes. Furthermore, there are already practical examples successfully demonstrating how buildings have been developed or transformed taking into account sustainability and circularity principles. These projects serve as reference points for future endeavours and as a learning ground for the entire industry.
The role of knowledge and instruments
The availability of well-founded knowledge is an essential prerequisite for the successful transformation of the real estate sector. This includes knowledge about materials, construction methods, deconstruction processes, and the reuse of components. In parallel, specific instruments and methods are required to track the life cycle of building components and identify their potential for a circular economy. Such tools support planners and project developers in considering both ecological and economic aspects equally.
The existing best-practice examples prove that the realisation of circular concepts in existing buildings is possible. They demonstrate innovative solutions ranging from material selection to the design of deconstruction processes. These projects are important catalysts and help to break down barriers and strengthen confidence in the feasibility of circular construction. The insights gained from these pioneering projects are used to develop generally applicable guidelines and standards.
Future perspectives for the construction industry
The continuous establishment of sustainable and circular construction methods in existing buildings is considered a long-term trend. The real estate industry faces the task of systematically applying and further developing existing knowledge. This requires close cooperation among all stakeholders – from architects and engineers to construction companies, investors, and legislators. The goal is to transform the building stock into a valuable material repository while significantly reducing ecological footprints.
- —Identification and analysis of existing buildings for circular potential.
- —Development and application of material passports and digital building data models.
- —Promotion of the reuse of building components and materials.
- —Integration of Cradle-to-Cradle principles into renovation and conversion projects.
The implementation of these principles is crucial to meet the ecological and economic demands of the future. The focus on existing buildings offers particular opportunities here, as the lifespan of buildings can be extended and resources used more efficiently.
