1. The chronological interval corresponds to the period of construction of the building, from the approval of the building license in February 1906 until Gaudí presented the construction at the annual contest of buildings and urban establishments convened by the Barcelona City Council in 1910. Gaudí signed the building certificate making it available for rent on 31 October 1912
2. Vega y March, M.: Secciones técnica e indicadora clasificadas por provincias, Barcelona, Cielorrasos de Yeso. In: Arquitectura y Construcción. Anuario de la construcción para 1918, 1st edn, vol. 2, p. 62. Establecimiento Gráfico Thomas, Barcelona (1917)
3. During the events of the Setmana Tràgica (“Tragic Week”) in Barcelona, many religious schools closed that year because they were the target of fires. The descendant family reports that at this time both father and son were in the Sagrada Família in case it was necessary to defend it from any attack
4. Unpublished notes from the diary of Pere Viñas Milà (1896–1973), who also worked as an apprentice at the age of 15 on the construction of the crypt of Colònia Güell in 1911, under Joan Beltran, a model maker and collaborator of Gaudí who created a plaster model of La Pedrera
5. It was Ignasi Casanovas i Camprubí (1872–1936) who received the monetary donation corresponding to the fees that Gaudí claimed and won through a lawsuit before the Barcelona Court of Appeal in 1915 against Roser Segimon, the owner of La Pedrera. Anuario de la Asociación de Arquitectos de Cataluña para 1916, 1st edn, p. 12. Farré y Asensio, Barcelona (1916)