Hi, I’m Nathan from Coresteel Taranaki.

Coresteel Buildings is your one-stop shop for commercial and industrial construction in New Zealand.

We’re known for delivering unique design and build solutions for commercial buildings and farm and lifestyle sheds, catering to a spectrum of diverse clients and sectors. Our exclusive steel structural systems – the Bracketless Portal System and DonoBeam – allow us to expand the building possibilities and construction efficiency, without compromising structural integrity.

Innovation is a key part of our approach to building. We can offer you a smarter, more cost-effective building solution to meet your individual needs. Get in touch with us today to start planning your new construction project.

The Coresteel Taranaki franchise is owned and operated by Nathan Mumby. Nathan purchased the franchise in 2019 and took on the role of Director, alongside his wife Karen. He brought a wealth of industry knowledge with him and over 20 years of experience in the commercial and residential sectors. Nathan and Karen have a strong reputation in the region for delivering high-profile commercial construction projects. 

coresteel franchisee taranaki steel construction siteOur team has taken on construction projects of all sizes and spans. With a focus on commercial, industrial and residential projects, Nathan and the team have become leaders in tailored building solutions. Nathan says, “We believe that no two projects are ever the same and we approach each new project with this mindset.” So whether you need a modern office, multi-purpose workshop or a large warehouse, Coresteel Taranaki will deliver a unique solution that is customised to your specific needs. Nathan adds, “We believe we have the capabilities to provide the largest single-span steel sheds in the region and we pride ourselves on our workmanship and attention to detail.”

From the outset, Coresteel Taranaki will work alongside you to identify your business or lifestyle needs and manage each element of your project. From design and consents to engineering and construction, we will ensure everything is completed to the highest standards of strength and durability. For a quality building you will be proud to call yours, get in touch with Nathan and the Taranaki team today.

Key Projects

Client testimonial

  • “Nathan and his team were recommended for professionalism, reliability, quality workmanship and attention to detail. From the outset Nathan proved to be all of the above as well as an excellent communicator through all stages of the construction process. We were very impressed by the lateral thinking approach to successfully solving problems encountered when joining the two existing structures together. The quality of workmanship from his team was exceptional and we are very happy with the end result. We wouldn’t hesitate to recommend Custom Construction and would be more than happy to discuss our building experience.”

    Natalie and Chris Hanson
  • “From the initial consultation, through the entire build to completion we had total peace of mind with Nathan. He was approachable, honest and totally transparent and kept us informed at all times, whilst also keeping to his word. He managed our re-build on budget and on schedule and he had a great team of very switched on people supporting him. It is now nearly one year on and we absolutely love our new home and can find no fault on his workmanship.”

    Joan Gibbs
  • “We were very impressed with the quality of work from Nathan and his team. The renovations on our home exceeded our expectations and the job was completed on time and under budget.”

    Tania and Mike Dowd
  • “Custom Construction were fast, professional and reliable throughout, and transparent with all associated costs so there were no nasty surprises.”

    Peter Jannings