Coresteel is a New Zealand owned and operated company, with 24 locally-owned franchises reaching from Cape Reinga to Bluff.

We specialise in the design and construction of large-scale commercial and industrial steel buildings, aircraft hangars, homes and sheds and pride ourselves on offering the best steel building solutions in the country.

Our buildings are New Zealand designed, manufactured and constructed to the highest engineering standards using our Bracketless Portal System that makes them superior to other steel building products on the market. Even larger buildings are also possible using the Tapered Box Beam.

Because we exclusively manufacture larger steel sections, we can also construct buildings of virtually any size, utilising the cost advantages of cold formed technology in far bigger buildings than are typically possible with competitors’ products.

Coresteel’s parent company, Donovan Group NZ Ltd, operate from Whangarei and provide the manufacturing, engineering detailing and marketing, management and software development for Coresteel Buildings franchises nationwide.