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Building and Project Management

Based in Coromandel Town and run by Duncan Bayne and partner, Deborah,
Coromandel Construction is your eco-friendly builder and Licensed Building Practitioner.

What we do

New builds, Alterations and Extensions and more…

Robyn Lewis

“I think Duncan’s most important attribute is his constant positive mood. There is always a solution and nothing is ever too much trouble. This is extremely important onsite, and creates a culture for other workers and contractors.
I unreservedly recommend him.”

Petra Meyboden

“I just want to thank you again for the wonderful work you did for me. I am so glad that you were the one to build my house. You have been so supportive and helpful with the project management and so patient with me in explaining things. Thank you Duncan, it was wonderful working with you. All our communications were fun and easy.”

Nick and Yvonne Hoffman

“We have been truly privileged to have you mastermind our little build. Your work is exceptional and your leadership likewise… we always look forward to when you arrive in the mornings, listening to your hearty laugh as you organise the day ahead with your men.”

Some recent projects

Lewis House, Coromandel 

New build with bespoke wooden sliding doors and concrete pond

Sentinel House, Coromandel

Designed by Ken Crosson, winner New Zealand Institute of Architects Award

Furniss House, Coromandel

Dining area with interior ply cladding

How can we help you?

We offer a family-run local solution. Based in Coromandel Town itself, we have local knowledge and a great network of tradesmen and specialists we can call upon to work with us. Your project won’t be delegated to inexperienced staff; Duncan, the business owner, will work with his team on your project and can add his experience and skills. But don’t let us blow our own trumpet; read what other clients have said about us here.

We like to think that Coromandel Construction approaches ‘mainstream’ building projects in an eco way. By assisting you to build more efficiently and sustainably, there could be savings to your project and you will benefit from a healthier living environment for years to come.

Check out our FAQs here.

  • New builds
  • Renovations and alterations
  • Extensions
  • Decking
  • Garages
  • Sleep-outs
  • Repairs
  • Fences
  • Door installation and replacement
  • Window installation and replacement
  • Shelving or kitchen installation

Learn more about us

Please get in touch and let’s talk about Your Project

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Our initial contact with Duncan was a breath of fresh air, as he was enthusiastic about the project and his attention to detail and timely responses at the quotation stage were impressive. 

We are experienced

We started our business in 2005 and provide project management and construction services in the Coromandel town and Upper Coromandel Peninsula areas.


About us

Your eco-friendly builder and Licensed Building Practitioner

Duncan Bayne worked as a sole trader for 10 years in Coromandel Town before setting up his business with partner Deborah.

Duncan is a Licensed Building Practitioner, in the Carpentry and Site One categories, and keeps himself up to date with current regulations, construction techniques and best practice.
Originally trained as a potter, Duncan blends his design skills with solid craftsmanship and attention to detail. He has worked on a number of architecturally-designed homes in the Coromandel Town area and continues to be excited by the challenges and opportunities for creativity that building projects, both small and large, can present.

Solid Craftsmanship

Attention to Detail

10 Year Guarantee

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