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Course Content

For architects, building designers and energy assessors

The 5 Whole-of-Home Assumptions That Are Most Likely to Fail

The assumptions that got your last house through Whole-of-Home are the ones sending this one back.

And cost you time or rework. Five reasonable assumptions that fail under Whole-of-Home: that minor changes will not matter, that lighting plans are just documentation, that services come later, that the assessor owns the outcome, and that a design that passed once will pass again. Why each one fails, the rework it causes, and when to pause and ask before it is built into the drawings.

60 minutes, self-paced Intermediate level 1 formal CPD point Certificate on completion National, NCC 2022 Whole-of-Home
Aligned to NSCA 2021 PC10 PC20 PC31 PC33 PC45
$99 inc. GST
  • Product neutral, no supplier content
  • Audio version and glossary included
  • Certificate saved to your dashboard

Secure card checkout. Tax invoice emailed.

Course content

7 modules on five assumptions, final quiz and certificate.

Start 10 min

Introduction and objectives

Why Whole-of-Home rework usually starts with a reasonable assumption, and why this hour looks at assumptions, not calculations.

Module 1 8 min

Why Whole-of-Home Is Catching Designers Off Guard

See why fabric and services are now assessed as one system, and why designs that barely changed are still getting pushback.

Module 2 10 min

Assumption #1: “Minor design changes won’t affect compliance”

Know why layout tweaks, glazing adjustments and equipment swaps act as system level changes, and how small ones add up.

Module 3 10 min

Assumption #2: “Lighting plans are just documentation”

See how fixture counts and layouts become lighting inputs, and why an incomplete plan brings in conservative defaults.

Module 4 8 min

Assumption #3: “Services decisions sit downstream from design”

Settle hot water, heating and cooling and any future battery allowance early, because the rating is built on them.

Module 5 10 min

Assumption #4: “The assessor owns compliance outcomes”

Find where your drawings, schedules and gaps shape the result, and why the assessor models your data, not your intent.

Module 6 8 min

Assumption #5: “If it passed once, it will pass again”

Know why a repeat design can rate differently on a new site, or under updated rules and software.

Finish 10 min

Going forward, key takeaways, quiz and certificate

When to pause and ask, and how early engagement cuts reassessment cycles. Then ten questions, and the certificate goes straight into your dashboard.

Intermediate. For designers, principals and documenters who already prepare houses for a Whole-of-Home assessment. Covers five common assumptions about design changes, lighting plans, services, responsibility and repeat designs, and when to seek guidance. It teaches no modelling or calculation, and it is general professional guidance, not legal advice.

Who it is for

Written for the people whose drawings the rating is built on.

Architects

You lead the design, and a detail you treated as settled can come back as a late request from the assessor.

1 formal CPD point

Building designers

You document the house the assessor models, and every gap in the set is filled with a default you did not choose.

1 CPD point, with audit-ready records

Energy assessors

You model what the drawings say, and spend hours chasing the lighting, services and changes nobody told you about.

1 hour of CPD

Small practice principals

You carry the fee when a job goes round again, and need the team to stop repeating the same assumptions.

1 hour of CPD

Document coordinators

You keep the drawings, schedules and specifications in step, and a mismatch between them is what triggers the questions.

1 hour of CPD
How it counts

Where this hour goes on your record.

National Standard of Competency for Architects (NSCA 2021) performance criteria this course aligns with:

PC10

Whole life carbon of materials and systems

PC20

Budget and timeframe against codes and requirements

PC31

Energy and sustainability over the project lifecycle

PC33

Integrating thermal and environmental systems

PC45

Performance standards for materials and systems

If you are

How it is recorded

A building designer

1 CPD point. Your certificate, the learning outcomes, the module outline and your quiz result are kept in your dashboard, so you can show what you studied if your CPD is audited.

An architect

1 formal CPD point. Aligned with NSCA 2021 performance criteria PC10, PC20, PC31, PC33 and PC45.

An energy assessor, practice principal or document coordinator

1 hour of CPD on Whole-of-Home assumptions and documentation risk, recorded on your certificate for your accrediting organisation, professional body or your own records.

CPD On Demand is not a registered training organisation and courses are not accredited by any registration body. Each course is aligned with the relevant competency frameworks and gives you the records to evidence it. CPD rules differ by registration body and state, so check with yours if you are unsure.

  • Identify the five Whole-of-Home assumptions most likely to fail during compliance and performance assessment.
  • Evaluate how design, specification, and documentation decisions influence assessment certainty and timeframes.
  • Explain why small design changes can create disproportionate impacts on overall project outcomes.
  • Apply practical strategies to reduce avoidable rework, delays, and compliance-related project risk.
  • Recognise the common triggers that lead to late-stage reassessment requests and design revisions.
  • Improve coordination with assessors by anticipating issues earlier in the design and documentation process.
Keep going

Pairs well with.

Building designers

When a Design Change Triggers a Whole-of-Home Re-Rating

Which changes reopen the rating, and how to time them so they do not.

Building designers

Whole-of-Home Compliance: What Building Designers Are Actually Responsible For

Assumption four in depth: where your responsibility ends and the assessor’s begins.

Building designers

Insulation Documentation That Gets Approved

The documentation habits reviewers look for, applied to the building fabric.

Questions

Before you enrol.

Whole-of-Home sits in the NCC 2022 energy efficiency provisions for new houses, and NCC 2025 carries it through unchanged. Victoria, Western Australia and the ACT adopted NCC 2025 on 1 May 2026; New South Wales, Queensland, South Australia and Tasmania stay on NCC 2022 until 1 May 2027, and the Northern Territory has set no date. Some jurisdictions vary or replace the house energy provisions, New South Wales through BASIX, so confirm the edition and pathway for each project with your state or territory building authority. The five assumptions fail the same way wherever a rating is required.

Start, stop and finish later. Progress is saved and the course stays in your dashboard.

Yes, on passing the final quiz. It is stored in your dashboard alongside your other CPD records.

No. It is about assumptions, not calculation: which design, lighting, services and documentation assumptions fail most often, and when to pause and ask. It is general guidance on professional practice, not legal advice, and the rating stays with your accredited assessor.

Yes. Team packs start at $579 for six courses shared across your practice.

No. Every course is product neutral. No lighting, hot water, heating, battery or rating software brands, no sponsor, no sales pitch at the end.

Catch the five assumptions before they cost you a re-rating, in one self-paced hour.

$99, 60 minutes, certificate on completion.

$99 1 hour, certificate