BAU 2027 is a five-day international trade fair for architecture, materials and building systems, scheduled for January 11–15, 2027, at the Trade Fair Center Messe München in Munich, Germany.112 Organised by Messe München GmbH, BAU takes place every two years and brings together people involved in planning, building and designing buildings.121
Its intended audience includes architects, planners, investors, representatives of industry and commerce, and building-trade professionals.1 The event is also relevant to manufacturers and other participants across the construction sector: its exhibition presents materials, technologies and systems for commercial, residential and interior construction, covering both new builds and the modernization or renovation of existing buildings.
The 2027 programme is organised around four themes: materials and resources; climate protection and adaptation; changing living spaces; and digitalisation and productivity.21 These topics connect practical construction choices with wider sector challenges. The materials theme includes efficient resource use, reuse and renovation; climate-focused work considers sustainable architecture and resilient urban areas; and the changing-habitat theme addresses evolving needs for space and its use.2 Digitalisation and productivity covers technologies such as AI, building information modelling and digital twins, and their application to design, construction and building operations.2
BAU’s history reaches back to 1964: Messe München identifies BAU as one of the events that marked its 60th anniversary in 2024. Its stated scope is international, with the fair serving as a meeting place for the construction and architecture community and exhibitors presenting products and solutions across the building sector.1113