Addenda Architects is a young collaborative architecture studio based in Barcelona, formed by Roberto González, Anne Hinz, Cecilia Rodríguez, Arnau Sastre and José Zabala.
During the period 2015–2025, architecture firms GHZ (Roberto González, Anne Hinz, José Zabala) and SASTREVIELBA (Arnau Sastre, Cecilia Rodríguez Vielba) teamed up under the name ADDENDA ARCHITECTS to successfully complete the design and construction of the Bauhaus Museum in Dessau (2015–2019), and more recently, the Renovation of the Public Facilities Urban Block in the Barcelona Sagrada Família Neighborhood (2020–2026) along with the Restoration and Renovation of an emblematic protoracionalist building in Barcelona designed by the architect Francesc Folguera: the Casal de Sant Jordi or Casa Tecla Sala (2021-2026).
