83 in 2050 have already been constructed. As a result, renovation is becoming a major issue, both in terms of saving materials and getting people out of fuel poverty. In this respect, we are thus seeing the emergence of a regulatory framework that sets – particularly in a rental context – minimal requirements for renovation, aiming to fight heat-leaking structures, for instance. However, when it comes to reusing materials, the normative gap remains an impediment, as the current standards only concern new products. This obstacle to initiatives by stakeholders in the profession – confronted, for example, with questions of responsibility in the event of a quality problem – should soon be removed thanks to a new CE mark applicable to materials for re-use. In light of the issues at stake for sustainable construction, we are currently seeing many standards and rules being updated or created. The profession will have to assimilate all these regulations, with a view to ensuring that the efforts made to this end are profitable, which could take one or two decades. For, in this long‑cycle activity, stakeholders need the normative framework to remain relatively stable in order to invest, for example, in skills training for tomorrow. The Qatar National Convention Center (QNCC) in Gharafat Al Rayyan, Doha, was built according to the US Green Building Council’s LEED certification standards. 1,500 international standards (I-Codes) drawn up by international standardization bodies with the support of the International Code Council
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