About Exhibition Buildnz Auckland Show 2026 will be held from 14-15 July, 2026 at Auckland Showgrounds, Auckland, New Zealand. This is a leading trade fair and exhibition for the Building & Construction Industry with a solid reputation for bringing building professionals and construction industry innovators together to share ideas, showcase the latest products and develop business relationships. It brings thousands of building professionals and construction industry innovators together to share ideas, showcase the latest products, and develop business relationships.