NCC 2022 Volume 2 - Simplified Guide for Property Owners in WA

The National Construction Code (NCC) Volume Two 2022 sets the minimum technical requirements for the design and construction of low-rise residential buildings (Class 1 and 10) in Australia. Whether you're building a new home, adding a granny flat, or setting up a carport, these regulations ensure your structure is safe, energy-efficient, and compliant.

This page breaks it all down—so you don't have to read through hundreds of pages.

Table of Content

What is NCC Volume Two?

NCC Volume Two is a mandatory building code in Australia that sets the technical construction standards for residential properties such as houses, sheds, carports, private bushfire shelters, and related non-habitable structures. It helps ensure:

  • Structural safety

  • Proper waterproofing and damp management

  • Fire safety measures

  • Health, amenity, and ventilation

  • Accessibility and movement

  • Energy efficiency

  • Resilience to bushfires (where applicable)

What Types of Buildings Does It Cover?

  • Class 1a: Detached houses or row houses.

  • Class 1b: Small guest houses or hostels (<300m²).

  • Class 10a: Sheds, carports, garages.

  • Class 10b: Swimming pools, retaining walls, fences.

  • Class 10c: Private bushfire shelters.

NCC Volume Two Structure

Volume Two is organized into:

  • Governing Requirements (Section A) – explains how to interpret and apply the code.

  • Technical Sections (H1–H8) – the main performance and construction requirements.

  • Schedules & Specifications – define terms, referenced documents, and formulas.

Key Updates in 2022

  • The 2022 edition includes major reforms:

  • Quantified Performance Requirements.

  • New Livable Housing Design standards (H8).

  • Improved Energy Efficiency metrics (H6).

  • Revised Fire Safety rules for better occupant protection.

  • Clarified footings, slabs, and bushfire construction standards.

Overview of Each Section – NCC 2022 Volume Two

  • Section A – Governing Requirements

    • How to interpret and apply the NCC

    • Building classifications and definitions

    • Use of Performance Solutions

  • Part H1 – Structure

    • Footing and slab design standards

    • Structural framing requirements

    • Site conditions (references AS 2870 & AS 3600)

  • Part H2 – Damp and Weatherproofing

    • Moisture protection and drainage

    • Gutter overflow and roof water management

    • External waterproofing membranes (AS 4654)

  • Part H3 – Fire Safety

    • Fire separation distances

    • Smoke alarm installation requirements

    • Prevention of fire spread between buildings

  • Part H4 – Health and Amenity

    • Ventilation and natural light standards

    • Wet area waterproofing

    • Sanitary facility requirements

    • Condensation management

  • Part H5 – Safe Movement and Access

    • Requirements for stairs and ramps

    • Handrails and non-slip surfaces

    • Fall prevention

  • Part H6 – Energy Efficiency

    • Performance targets for thermal comfort and lighting

    • Requires NatHERS certification for dwellings

  • Part H7 – Ancillary and Bushfire Provisions

    • Bushfire-prone area construction guidelines

    • Site works and retaining wall requirements

    • Rules for private bushfire shelters

  • Part H8 – Livable Housing Design

    • New in 2022

    • Step-free entries

    • Accessible bathroom layouts

    • Aging-in-place and disability-friendly features

Schedules and Specifications

  • Schedule 1: Definitions and abbreviations

  • Schedule 2: Referenced documents (e.g., AS/NZS standards)

  • Specifications: Construction testing methods, fire safety specs, and climate data

Who Must Comply With It?

  • Builders and building surveyors

  • Architects and engineers

  • Plumbers and developers

  • Homeowners doing major renovations or new builds

Non-compliance can result in project delays, denied approvals, insurance issues, or legal action.

Book an Inspection in Perth

At Descom Consultant, we conduct fully compliant inspections based on the NCC 2022 and relevant Australian Standards. Our licensed inspectors guide you through every clause relevant to your project and ensure peace of mind before construction or purchase.

Home Inspector Perth - Syed Ali

FAQ

1. Do I need to follow NCC Volume Two if I'm renovating?

Yes—if structural, waterproofing, or safety elements are involved. Minor cosmetic updates usually don’t apply.

2. What is a Performance Solution?

It’s an alternative to the "Deemed-to-Satisfy" pathway. Instead of following prescriptive rules, you prove compliance through expert evidence.

3. Does it apply to sheds and carports?

Yes. NCC Volume Two covers all Class 10a structures like sheds and garages.

4. What are "quantified Performance Requirements"?

These are performance targets with measurable outcomes (e.g. maximum thermal energy usage, fire spread distance).

5. Is a builder responsible for knowing the NCC?

Yes—builders must comply. But it's also beneficial for homeowners to understand what’s required.

6. What's new in the Livable Housing Design requirements?

Step-free entries, accessible showers, wider doors—helping homes adapt for aging or disability.

7. How do I know if my home needs bushfire protection?

Bushfire risk is determined by your council or planning overlay. If you're in a bushfire-prone area, Part H7 applies.

8. How is NCC enforced?

Through building permits, inspections, and certifications issued by your local council or registered surveyor.

9. Can I download the NCC for free?

Yes. Visit the Australian Building Codes Board (ABCB) website to register and access all volumes.

10. Does NCC apply to existing homes?

Mostly for new builds or renovations. However, extensions or safety upgrades may trigger compliance obligations.