The CBL (Campus Bizia Lab) program is a tool developed by the University of the Basque Country (UPV/EHU) aimed at triggering a collaborative process among faculty, administrative and service staff, and students through a transdisciplinary approach. Its goal is to address sustainability challenges (SDGs, Sustainable Development Goals) within the university’s own facilities. The program pursues three main objectives: first, to build a community that works cooperatively to solve sustainability-related challenges identified on UPV/EHU campuses; second, to design, implement, and evaluate a work-based learning framework that enables high-impact learning experiences linked to the SDGs; and third, to establish and give visibility to an institutional Campus Living Lab project that progressively extends its reach to all UPV/EHU degree programs, fostering multi-level sustainable practices.

To achieve these goals, an initiative focused on Indoor Air Quality (IAQ) was developed, aligning with the scientific research of the authors. In September 2020, following the disruption caused by the COVID-19 pandemic, in-person teaching resumed. The university implemented strict ventilation guidelines, requiring windows to be fully open for 10 minutes every hour to ensure optimal air quality and reduce disease transmission. This presented an opportunity to integrate ongoing IAQ research at the School of Architecture into a project called “Healthy Classrooms,” engaging students, faculty, and administrative staff. The project promoted good natural ventilation practices using real-time IAQ information systems, fostered collaboration among university stakeholders, involved students in faculty-led research lines, and applied these insights in final-year undergraduate architecture projects, thus fulfilling the program’s first objective.

To achieve the second objective, a series of steps were developed involving various university groups. First, a theoretical exploration of the issue was carried out with advanced Master's and PhD students. This was followed by the monitoring of classroom spaces and data analysis conducted by the research team in collaboration with students working on their undergraduate theses. During the first phase, classroom users had no access to IAQ data; in the second phase, they were introduced to a methodology for actively managing ventilation based on sensor data.

To fulfill the third objective of the CBL program, the experience acted as a catalyst for integrating the knowledge gained by participating students into their academic work, linking it directly to the SDGs and promoting dissemination through conferences and sustainability-related events.
This paper presents the trajectory from 2020 to 2024, highlighting the use of classrooms as living laboratories, the integration of research lines into academic projects, and the incorporation of the Sustainable Development Goals into undergraduate theses. It also showcases a selection of works presented at conferences and competitions focused on the application of the SDGs in architecture.

Keywords: Sustainable Architecture, Indoor Air Quality, Architectural Education, Education for Sustainable Development.