Protocollo ITACA is an environmental label promoted by the Italian Regions and it has a public origin. The assessment system is managed by ITACA (Federal Association of the Italian Regions) with the scientific support of iiSBE Italia and ITC-CNR. Protocollo ITACA is based on the international assessment methodology SBMethod of iiSBE and it has been contextualized at local level by several regions: Piemonte, Liguria, Valle d’Aosta, Veneto, Friuli Venezia Giulia, Lazio, Marche, Toscana, Umbria, Puglia and Basilicata. At regional level the Protocollo ITACA is mostly used to support specific policies to promote sustainable building. In particular in the framework of the social housing programs, where economic incentives are given on the base of the environmental performance achieved. Beside the regional versions, in 2011 a national version of Protocollo ITACA will be delivered and a national certification process will be implemented also. This national certification is intended to create a point of reference for the market stakeholders. The assessment system is voluntary.