Episode summaryDuncan Leask is one of those people who just got stuck in and built something brilliant. In a little over five years he has grown Optiplumb into one of the Waikato's standout trades businesses, and in this episode he shares exactly how, and why none of it means much without the life around it. We talk about the obsession with numbers that underpins everything he does, the grit that goes back to a hospital bed at 18, why he hires the person and not the CV, and how he protects time for his wife and three kids without apology. It is an honest, warm conversation about building a business on your own terms, and a few unpopular opinions along the way. In this episodeWhy Duncan is a dad first and a business owner secondThe single most important thing he believes every business owner must understandHiring the best person before you even have the work, and why the person beats the role every timeThe accident at 18 that shaped his grit, and the word he refused to accept from his doctorThe 1 percent that separates good from greatSaying no to protect your energy, and the non-negotiables that keep him groundedWhy chasing perfect holds people backHis honest take on university, the trades, and the future of work in the age of AI ChaptersTimestamps are based on the raw recording, so nudge them once the intro is trimmed in the edit. 02:00 Who is Duncan the human: values, family, and grit03:30 The career journey, 20 years in the trade, and the mind-blowing moment in Perth05:00 Growing fast, hiring before the work, and flying by the seat of your pants07:00 Know your numbers: the foundation of everything08:00 How Duncan hires, and why attitude beats everything09:45 The trades are customer service: how people feel matters11:00 Building and protecting a culture, and winning through winter14:30 Leadership, trust, and doing what you say you will do16:45 Little Duncan: rural roots, independence, and being the first in business20:00 The accident, the hospital bed, and refusing to be just a number24:30 The power of the 1 percenters25:00 Consistency, mindset, and seeing it from the other person's side27:50 Saying no, protecting your energy, and managing your time30:30 Family non-negotiables and switching off34:30 Parenting, values, and the legacy he is building36:30 Energy, connection, and what AI can never replace40:30 His secret sauce: relating to anyone42:00 Constructive, not conflict, and why everyone just wants to be heard44:00 Fundamental beliefs: openness, perfectionism, and living life on your terms49:00 An honest take on university, the trades, and the ambitious middle51:00 The future: embrace the tech, but stay human About DuncanDuncan Leask is the founder and managing director of Optiplumb, a family-owned plumbing, gasfitting, drainlaying and backflow prevention company based in Hamilton and serving the wider Waikato. With more than 20 years in the trade across New Zealand and overseas, Duncan started Optiplumb just over five years ago and has grown it quickly on the back of strong values, sharp systems and a genuine love of people. He is a proud dad of three, a member of WAM, and living proof that you can build a serious business and a full life at the same time. LinksOptiplumb: https://www.optiplumb.co.nzDuncan on LinkedIn: https://www.linkedin.com/in/duncan-leask-75013b14bOptiplumb on Facebook: https://www.facebook.com/Optiplumb Enjoyed this episodeIf this one resonated, follow Growing Kiwis wherever you listen, and share it with someone who is building something of their own. We would love to hear your biggest takeaway, so come and say hi over on Instagram.