Material Passports and Building Data

Circular construction needs records that survive the design team. A building can be designed for reuse, disassembly, or future recovery, but the claim decays if product identity, composition, location, certificates, ownership terms, maintenance history, and removal instructions vanish after handover.

The practical question is not whether the project has a dashboard. It is whether the record lets a later owner, contractor, certifier, marketplace, or investor know what exists, where it sits, what evidence supports it, and which recovery route remains credible.

Start by separating the layers:

• Material Passport — the project or asset record that preserves material and product evidence after handover.
• Digital Product Passport (DPP) for Construction Products — the regulatory product-level record emerging under the EU product-passport path.
• Building Resource Passport (BRP) — the asset-level aggregate used by owners, investors, and recovery teams.
• Digital Building Logbook (DBL) — the governed record environment that keeps passports, energy files, renovation evidence, and access rights attached to the same asset over time.
• Product Circularity Data Sheet (PCDS) — the standardized, machine-readable product-level statements that let a passport ingest circularity claims without translating marketing language by hand.
• Material-Passport Schema and Interoperability — the field structure that decides whether passport data can move between systems.
• BIM-Linked Material Tracking — the model connection that keeps passport data tied to location, quantity, and change.

Bad data turns circularity into a label; good data keeps higher-value reuse, repair, refurbishment, and recycling decisions available.