There is an increased risk of microbial transmission in hospital settings. Indeed, the French public health has conducted a national survey on the evolution of risk of contamination within sanitary areas. And this showed that 5.71% of hospitalized patients have a nosocomial infection in 2022. Comparing this value to 2017, which had 4.98%, it indicates a 0.73% increase in patients who have been infected with nosocomial infections. And this is due to the transmission through the surfaces of materials. However, the materials used are often chosen without a systematic assessment of their impact on infection prevention, patient safety, or sustainability. This study aims to identify and classify the most commonly used finishing materials in healthcare facilities, with the aim of supporting safer and more hygienic design. To achieve this objective, a mixed methodology was adopted: it combines a review of specialized literature, the analysis of data from hospital design guides and specialized books, as well as site visits and exchanges with field professionals. This approach has resulted in an inventory of materials by location. The materials were then grouped by family, taking into account specific selection criteria such as ease of cleaning, resistance to chemical agents, durability, cost and environmental impact. The identification of these materials is an essential first step towards creating a dedicated database. This database will then be enriched with quantitative and qualitative data from comparative evaluations according to the defined criteria. In the long term, this database will be integrated into the database of a digital design aid tool to support designers and architects in their choice of materials in hospitals.