About Exhibition Megabuild Indonesia 2026 will be held from 4th - 7th June 2026 at Nusantara International Convention Exhibition in Jakarta, Indonesia. This is an international exhibition and conference on architecture, interior design and building materials. MEGABUILD Indonesia, Jakarta’s largest building material exhibition held in the heart of Jakarta at Jakarta Convention Center (JCC), congregates over 40,000 professionals from Developers, Project Owners, Operators, Architects, Interior Designers and Engineering into this annual 4 days event.