Circular bioeconomy relies on restorative use of natural resources in a safe, high-quality manner, ensuring a continuous flow of biomaterials. Achieving circularity in construction includes leveraging 3D-Printing with biomaterials to optimize carbon storage and resource conservation. Within this logic, this paper examines the potential symbiosis, in the Iberian Peninsula, of integrating wood waste from the construction and forestry industries, into additive manufacturing (AM). This demonstrates a novel pathway for developing multifunctional and eco-friendly building components, allowing a scalable production. By repurposing the annual volume of timber waste from the region into raw materials for AM, this synergy could supply roughly 377,000 new residential units and sequester 17 million tons of CO2, directly addressing the housing crisis and climate change challenges. Beyond, it promotes bioregionalism, reduces CO2 emissions, and generates bioenergy at end-of-life, offering a scalable and sustainable alternative, underscoring cross-industries collaboration and regional initiatives.