Overview

The Whole of Home Assessment is a requirement introduced under the NatHERS / NCC 2022 energy efficiency reforms.
While the building shell receives a star rating, the Whole of Home score evaluates the energy performance of appliances and systems throughout the home, including:

• Heating & cooling

• Hot water

• Lighting

• Cooking systems

• Pool & spa pumps

• Renewable energy / solar systems

We provide accurate Whole of Home Assessments to help your project meet the minimum compliance score required for building approval, ensuring a smarter, more energy-efficient home that is cost-effective to run.

Why Whole of Home Matters

The Whole of Home tool measures the home’s estimated annual energy use and assigns a performance score.
This ensures that not only the building envelope is efficient, but the systems installed inside the home also contribute to sustainable energy performance.

A compliant score results in:

• Lower running costs for the homeowner

• Improved comfort and indoor climate

• Reduced greenhouse emissions

• Approval-ready documentation for building certification

What We Assess

We aim to optimise performance using cost-effective and practical solutions suitable for your building design.

What You Receive

Your Whole of Home assessment package includes:

• Whole of Home Performance Score Certificate

• NatHERS Thermal Performance Star Rating (if required)

• System and Fixture Specification Recommendations

• Compliance Report for Building Approval

• Guidance to Improve Score (if needed)

If performance shortfalls are identified, we provide targeted improvement options — instead of recommending unnecessary system upgrades.

Suitable For

• New Homes (Single & Dual Occupancy)

• Townhouses & Multi-Unit Developments

• Major Renovations & Extensions

• Custom Architectural Builds

• Volume Builder Standard Plan Assessments

Why Choose Us

• Skilled thermal performance and energy modelling professionals

• Clear, practical solutions that suit real build scenarios

• Fast turnaround for urgent certification needs

• Alignment with NCC 2022, NatHERS & relevant state requirements

We ensure your documentation is council and certifier-ready, reducing delays.

What We Need to Start

Send us:

• Architectural drawings (PDF or DWG)

• Appliance / HVAC preferences (if known)

• Site location / orientation

We’ll review and provide a fixed-fee quote and turnaround time.