The operating system for circular construction.

Every day, decisions about existing buildings are made without knowing what they actually contain. What materials are embedded in a 1970s office block? Or a 1960s multi-story social housing block?  What is its embodied carbon footprint? Which materials are beyond their expected life-span? What is the reuse potential if it comes down? Not knowing leads to increased cost, increased risk, and missed potential for resource and CO2 savings across existing building portfolios.

Circue solves the data problem at the root of circular construction. We provide a single entry point to circular decision-making for building owners, developers, municipalities, and the broader construction value chain. The platform collects, validates, and enriches data on existing building stock, embedded materials, and embodied carbon, turning buildings into structured datasets and digital twins that make renovation, repurposing, and reuse decisions faster, cheaper, and better informed.

Core capabilities include fast automated resource screening, advanced building audit tools, circular scenario evaluation, and building portfolio management. Where manual audits previously required weeks or even months of work, Circue’s automated approach dramatically reduces the time and cost of understanding what a building contains and what can be done with it.

Circue also operates a Material Exchange, aggregating available reclaimed and circular materials from multiple marketplaces into a single searchable and filterable overview, making the circular supply chain visible and navigable.

Based in Denmark and engaged in EU-funded research and innovation projects, Circue is building the data foundation that makes circular construction the rational default, not the exception.