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The Building Circularity - DGNB Resource Passport tool in One Click LCA enables users to generate a DGNB-compliant Building Resource Passport based on the official DGNB Excel template (Version 1.2.1). The tool supports circular economy documentation and material transparency requirements for DGNB certification workflows.

The tool focuses on Material efficiency, circular economy assessment, material flow tracking, material origin documentation and end-of-life circularity potential.

Unlike LCA tools that focus on environmental impacts such as GWP or primary energy demand, the DGNB Resource Passport is a mass-based circularity assessment tool. It evaluates how materials enter, exist within, and potentially leave the building lifecycle.

The tool exports data directly into the official DGNB Excel template and populates several required sections automatically, including input values, materiality, circularity and quota calculations.

Previously, the DGNB Resource Passport functionality was included inside the Building Circularity tool. It is now available as a standalone tool named Building Circularity - DGNB Resource Passport.

The tool currently operates only in the old user interface. Support for the new user interface will be introduced in future updates.

The DGNB Resource Passport tool supports DGNB certification workflows requiring circularity and material documentation.

The Resource Passport tool can coexist with other DGNB tools within the same project, sharing resources and project data automatically. However, users should avoid combining substantially different DGNB methodologies or incompatible project structures in the same project setup.

The tool is designed to:

The tool does not:

The DGNB Resource Passport evaluates both Pre-use circularity (Material origin and secondary material content before installation) and post-use circularity (End-of-life recovery and reuse potential after the building lifecycle).

The DGNB Resource Passport workflow begins by setting up a project in a compatible DGNB tool within One Click LCA. Once the project has been created, users can add the Building Circularity - DGNB Resource Passport tool from the available tool selection.

Because the Resource Passport functions as an add-on tool, it shares resources and material data with the DGNB tools already present in the project. This means that materials, quantities, and project data entered in the DGNB assessment workflow can also be used in the Resource Passport without duplicate data entry.

After adding the tool, users should review the project resources and verify that the correct DGNB workflow and classification system are being used. Projects using DGNB 2023, DGNB Plus, or QNG workflows use the "Kostengruppe" classification system, while older DGNB methodologies may use "KG DIN 276" classifications.

The next step is configuring the circularity-related assumptions for the project materials. The DGNB Resource Passport relies on a number of additional questions that help determine both pre-use and post-use circularity potential. Users can define:

These inputs are important because the tool does not automatically determine circularity potential. Instead, it combines project material data with the user’s circularity assessments to calculate material origin shares, avoided primary materials, and end-of-life recovery potential.

Once the material data and circularity assumptions have been reviewed, the DGNB Resource Passport calculations can be generated. The tool organizes materials into DGNB material categories such as wood, metals, concrete, plastics, gypsum, and mineral construction materials, and calculates mass-based circularity metrics for each category.

The generated results are then exported into the official DGNB Building Resource Passport Excel template. The export automatically fills several sections of the template, including:

Certain sections of the Excel file also contain embedded formulas that calculate values automatically after export.

After exporting the file, users should carefully review the generated template and complete any remaining mandatory sections manually. Some information cannot be filled automatically because it is project-specific or unavailable in environmental datasets. These sections may include:

Once all mandatory information has been completed and reviewed, the Excel file can be submitted as part of the DGNB certification documentation process.