On December 18, 2019, José Ángel Ferrer gave a lecture on SUSTAINABLE ARCHITECTURE at the Torreluz hotel in Almería to an audience linked to the home construction sector. José Ángel spoke about different strategies to accredit SUSTAINABLE ARCHITECTURE in buildings and delved into some of the organizations that currently lead the certification of sustainable buildings such as BREEAM or LEED. Ferrer explained some details of the process of accrediting the sustainability of some buildings that Ferrer Arquitectos has designed with sustainability criteria, such as the PITÁGORAS building or a recent project of 84 homes for NEINOR HOME in Mojácar. He placed special emphasis on the social and economic benefits generated by a building with sustainable accreditation and also referred to all the expenses involved in the construction of a sustainable building, from the construction aspects to those corresponding to the entire certification accreditation process.