Builder · Developer · New Zealander
I build things.
Then I stand behind them.
Qualified builder. Co-founder and Managing Director of Williams Corporation. From a carpentry apprenticeship to building homes and businesses across New Zealand.
02 Conviction
Build what is useful.
Say what is true.
Own the outcome.
I left Nelson College on my 16th birthday and went straight into a carpentry apprenticeship. I formed my first company at 17. I believe enterprise, clear rules and more building are how New Zealand becomes prosperous.
The full story03 Enterprise
What I build
Companies created to solve real problems.
04 Ideas
Property · Business · Economy
I am interested in the ideas that decide whether New Zealand builds or stalls.
Housing supply, productive enterprise, local government, taxation and the size of the state.
Latest writing
A Supplier Is Part of the Product
A good quote is the beginning. The useful result is the right goods, information and support reaching the person who needs them.
Sales Should Make the Decision Clearer
A useful sales conversation makes the choice clearer. Matthew Horncastle on buyer fit, honest follow-up and measuring sales without mistaking activity for progress.
I Left School. I Did Not Stop Learning.
Matthew Horncastle on his apprenticeship, audiobooks and self-education: how to keep learning as your responsibilities grow, and turn knowledge into judgement.
05 Public record
Recent coverage
Independent questions. Direct answers.
NZ HeraldProperty boss Matthew Horncastle on possible National run and PM ambitions7 April 2026↗ (opens in a new tab)
The PressFrom hammer to high-rise: the school leaver who built a property empire19 March 2026↗ (opens in a new tab)
OneRoofMoney, politics and real estate: Who is Matthew Horncastle and why is he in the headlines?7 March 2026↗ (opens in a new tab)
All coverage
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