Renewable Energies and Certification Energy certification is mandatory (from December 1st, 2013 - Decree Law 118/2013) in the purchase, sale, and rental of properties, and it has a validity of 10 years. Our mission is to provide a professional quality service with a competitive market value. 12 Mar 2017 min de leitura Share article FacebookXPinterestWhatsAppCopy link Link copiado