Interdisciplinary Preservation Tool (InterPreT) facilitates a simple interdisciplinary, model-based collaboration workflow between relevant actors in the earliest planning phase – when the decision for or against preservation of a built asset is made. The tool offers a guided exchange process based on real-time data feedback from a simplified 3D model between owners, architects, engineers, contractors and users. The evaluation includes both technically measurable (e.g. energy, resource consumption, cost) and non-quantifiable factors such as architectural quality and socio-cultural value that can be decisive for preservation. The aim is to increase the chances of preserving existing buildings through a systematic, holistic assessment.

Task 1: Development of quantitative and qualitative criteria relevant to preservation

• Model-based calculation of energy and cost parameters and technical properties

• Evaluation scales for socio-cultural qualities based on the existing building stock

Task 2: Development of the workflow and visual data analysis output based on 3D input

• Intuitive input and visual output formats for quantitative data and qualitative criteria.

• “Dashboard” format for the multi-criteria analysis of existing and new buildings

Task 3: Validation of the InterPreT tool on two pilot projects and analysis of learnings

Circularity goal: To increase the chances of preserving existing building stock through renovation, adaptation or extension instead of replacement through demolition and new construction.

The decision between preservation or replacement of existing buildings is a complex issue. Assessing individual factors (e.g. building technology, structure, acoustics, room program) often favors replacement. The industry is lacking a holistic analysis tool supporting the case for preservation through an early, balanced assessment.