Reward biobased building materials through quantified CO₂ storage so stored carbon becomes visible in procurement, design and policy choices. Timber, fibre crops and other biobased materials can temporarily store carbon while also replacing more emission-intensive materials when used well.
For the Gelderland built-environment work, this is relevant because housing construction, renovation and material policy are linked. Quantifying storage helps prevent vague claims and makes it possible to compare design options. The reward should be tied to credible calculation, lifespan, reuse potential and responsible sourcing.