Building Act 2004

Building Act 2004 — NZ compliance guide

When you need consent, what's exempt, owner-builder rules, and code compliance certificates — with exact section references.

The Building Act 2004 regulates all building work in New Zealand. Whether you're a homeowner, builder, or developer, understanding when consent is required — and what you must do to get it — is essential. Getting it wrong can result in orders to demolish work at your own cost.

Key topics
Section 40

When building consent is required

What needs consent, what's exempt, and the application process.

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Section 90

Owner-builder exemption

What you can do yourself, the 3-year sale rule, and disclosure requirements.

Read guide →
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