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People and Values

Custom construction team


  • We're committed to employing qualified and certified local builders who take pride in using their skills to complete projects on time and as quoted, ensuring the entire construction process is hassle-free for our clients.
  • We're committed to developing and supporting the next generation of Custom Construction local builders
  • We enjoy that each employee brings his or her own unique ideas and expectations to each project, understanding the importance of the work we do for our clients.
  • Our core values are safety, integrity, fairness, accountability, open communication, continued learning, consideration of others, pursuit of excellence, reliability and citizenship.

Want to get to know us? Call into our showroom to get the best design and build information.


Meet The Team

Local New Plymouth Builders - Nathan Mumby

Nathan Mumby

Owner of Custom Construction for seven years, licensed carpenter and licensed building practitioner. Nathan has over 20 years experience in the building industry including residential and commercial building. Nathan is Taranaki’s first Homestar assessor. Nathan has had relevant experience having worked on the new TDHB Building, multiple jobs for the Department of Education, the YMCA, and many complex renovations, additions and new homes.

Passionate, friendly, a people person. Loves his job. Vibrant and very motivated. A family man with an excellent eye for detail. Our fearless leader and visionary.


Stu Barnes - Custom Construction Team

Stu Barnes

Stu has been with us right from the very beginning of Custom Construction. He started as a Foreman here and has proven not only to be hard-working and loyal but one of our most knowledgeable staff. A Qualified Carpenter and Licensed Building Practitioner, Stu was promoted to Project Manager last year after completing the Success Strategies for Team Leader and Supervisors training through Leadership Management Australasia.

You can be sure any project that Stu runs will be highly organized and completed to the highest of standards.


Local New Plymouth Builders - Karen Mumby

Karen Mumby

First job is  a mum, second job is owner of Custom Construction for seven years. Wears many hats at CC including HR, accounting, marketing and administration 

Passionate. Loves her job. Boss of Nathan.


Local New Plymouth Builders - Shilo


Quantity Surveyor Cadet - studying to be a QS. Came to CC originally for work experience. We liked her so much we couldn’t let her go! Diploma in Construction (2015) Working towards a National Diploma in Construction Management and Quantity Surveying.

Team player. Very motivated. Hard working and ambitious. Excellent work ethic


Local New Plymouth Builders - Carl


Carl has been a Project Manager for over 5 years. He brings a wealth of experience to Custom Construction with over 17 years in the construction industry. including site supervision, Diploma in Construction, Qualified Carpenter, construction management and quantity surveying. Carl is passionate, organized and an immense asset to the Custom Construction team.

Carl has a relentless commitment to finish projects on time and to a high standard.



Duncan Duncan English

Duncan has been involved in a variety of construction projects from housing through to large multi-million dollar commercial, industrial and civil projects. He has extensive experience in the commercial construction process, project management, deadlines, subcontractors, drawings, details and documentation. With over 25 years’ experience in construction, he is very familiar with the tendering process and project administration, including cost control and pay schedules in accordance with the CCA.

Duncan is an industry professional with expert knowledge of construction costs and contracts, he plays an exciting and vital role in the custom construction team.



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