Limited to DIY superstores of at least 300 m² and their in-store and own-website sales, the market covered by this study includes tools, building materials, paint, kitchens, bathrooms and garden products. It totalled 21,823 billion euros including all taxes in France in 2025, down 1,4 % year on year, following a decline of 4,3 % in 2024. The study examines differences between departments and store formats, the still-limited but growing role of e-commerce, and customer behaviour: DIY frequency, barriers related to a lack of skills, choice criteria, and the complementary roles of online research and in-store advice. It also analyses the sector’s concentration around Adeo and Kingfisher, the contrasting trajectories of Leroy Merlin, Weldom, Castorama, Brico Dépôt, Bricomarché and Mr.Bricolage, and strategies to serve local customers and win over tradespeople. The organisation of purchasing, private-label brands, inventory and logistics sheds light on retailers’ economic drivers, particula
