The objective of this consultancy is to carry-out a market readiness analysis for the sustainable public procurement of construction materials in three pilot OECS countries (Antigua and Barbuda, Dominica and Grenada). The following specific objectives have been defined: Assess the existing productive capacities for sustainable construction materials; Analyze the potential responsiveness and competitiveness of the market and the national business sector to public tenders inclusive of sustainability considerations for construction materials; Help define sustainability criteria for the procurement of sustainable construction materials and identify the corresponding certification or verification instruments and tools, as well as gaps; and Provide recommendations for the progressive introduction of sustainability criteria in the public procurement of construction materials, based on market readiness.