EUROPEAN COMMISSION  DIRECTORATE-GENERALENVIRONMENT  DirectorateB – Green Growth & Circular Economy Unit B.1 – Sustainable Production, Products & Consumption Ref. Ares(2021)2953911 - 04/05/2021 Call for tenders ENV/2021/OP/0003  1  Open procedure TENDER SPECIFICATIONS  Supporting the development of a roadmap for the  reduction of whole life carbon of buildings 