The article reviews the current state and potential of biomaterials in the construction sector, highlighting their environmental benefits and technological advancements. Biomaterials, derived from renewable sources, offer significant reductions in greenhouse gas emissions and energy consumption compared to traditional materials. The review covers various types of biomaterials, including bioplastics, biocomposites, biocement, mycelium-based materials, and fiber-reinforced composites, detailing their advantages such as reduced water absorption, improved energy efficiency, enhanced acoustic properties, and better mechanical performance. The article also discusses the challenges and barriers to the widespread adoption of biomaterials, such as commercial viability, regulatory compliance, and industry standards. It emphasizes the need for collaborative efforts among researchers, manufacturers, policymakers, and industry stakeholders to overcome these challenges and promote the integration of biomaterials into construction practices. Case studies are presented to illustrate the practical applications of biomaterials, including the use of coffee waste composite boards for sound and thermal insulation, eggshell powder-enhanced concrete for improved mechanical properties, and polyurethane-coated hydrangea stems as insulation materials. These examples demonstrate the potential of biomaterials to enhance building performance and sustainability. The policy and regulatory framework surrounding biomaterials is also examined, highlighting the role of policies in promoting the use of sustainable materials and the impact of regulations on the adoption of biomaterials. The article concludes by discussing the potential impact of technological advancements on biomaterials, emphasizing the importance of ongoing research and innovation in developing more sustainable and eco-friendly building materials.The article reviews the current state and potential of biomaterials in the construction sector, highlighting their environmental benefits and technological advancements. Biomaterials, derived from renewable sources, offer significant reductions in greenhouse gas emissions and energy consumption compared to traditional materials. The review covers various types of biomaterials, including bioplastics, biocomposites, biocement, mycelium-based materials, and fiber-reinforced composites, detailing their advantages such as reduced water absorption, improved energy efficiency, enhanced acoustic properties, and better mechanical performance. The article also discusses the challenges and barriers to the widespread adoption of biomaterials, such as commercial viability, regulatory compliance, and industry standards. It emphasizes the need for collaborative efforts among researchers, manufacturers, policymakers, and industry stakeholders to overcome these challenges and promote the integration of biomaterials into construction practices. Case studies are presented to illustrate the practical applications of biomaterials, including the use of coffee waste composite boards for sound and thermal insulation, eggshell powder-enhanced concrete for improved mechanical properties, and polyurethane-coated hydrangea stems as insulation materials. These examples demonstrate the potential of biomaterials to enhance building performance and sustainability. The policy and regulatory framework surrounding biomaterials is also examined, highlighting the role of policies in promoting the use of sustainable materials and the impact of regulations on the adoption of biomaterials. The article concludes by discussing the potential impact of technological advancements on biomaterials, emphasizing the importance of ongoing research and innovation in developing more sustainable and eco-friendly building materials.