Ideal if you're:
Send the plans and project details you already have, and we’ll review what is needed for your BASIX Certificate and provide clear next steps.
20,500+
Residential assessments
NSW-wide
BASIX project experience
12+ years
Industry experience
35+ people
Coordinated national team
You don't need every fixture, appliance or system detail finalised before getting started. Send the plans, drawings, specifications and any certifier comments you already have, and we'll review what is still needed for the BASIX Certificate.
After reviewing your project, you'll receive:
Why project teams choose Certified Energy
Is this service right for you?
This service is for homeowners, architects, designers and builders preparing a NSW residential project that may need a BASIX Certificate as part of its approval documentation.
New homes
For new residential projects where water, energy and thermal commitments may need to be documented before the plans move through the relevant approval process.
Alterations and additions
For additions, renovations and other residential work where the project type and scope may trigger BASIX documentation requirements.
Multiple dwellings
For dual occupancies, townhouses, apartments and other residential developments where several dwellings may need coordinated BASIX documentation.
Where do you start?
A BASIX Certificate can depend on information shown across your plans, specifications and schedules. Reviewing these details early gives your project team time to confirm anything that is missing before submission.
Send the documents you already have, and we’ll explain what can be reviewed now, what still needs to be confirmed and what happens next.
The drawings may already identify the dwelling layout, glazing, insulation, fixtures, hot water system and other details needed for the BASIX review.
Some fixtures, appliances, heating and cooling systems, rainwater details or construction selections may still need to be confirmed.
You’ll receive clear notes on the remaining project details needed before the BASIX Certificate can be prepared or finalised.
Understanding your BASIX Certificate
Your BASIX Certificate is based on the water, energy and thermal details shown in your plans and project specifications.
Send what you have. We’ll confirm what can proceed and what information is still needed.
SEND YOUR PLANSWe review the available drawings, specifications and project details to understand the type of residential project and the information already provided.
Where applicable, we review water, energy and thermal information and identify any additional project details needed before the BASIX Certificate can be completed.
Once sufficient information is available, the BASIX Certificate is prepared within the confirmed project scope and supplied for the next stage of your NSW residential project.
What you'll receive
From the first review through to your completed BASIX Certificate, you'll understand what has been reviewed, what still needs attention and what happens next.
Item 01
Your drawings, specifications and project information are reviewed to determine what is available and what may still be required.
Item 02
Once sufficient project information is available, your BASIX Certificate is prepared within the agreed scope.
Item 03
Where your project requires NatHERS or Whole of Home documentation, these related services can be coordinated as part of the wider residential submission.
Item 04
You'll receive practical guidance on any remaining information needed before your BASIX documentation is ready for the next stage of your project.
Why Certified Energy
Your BASIX documentation needs to align with the plans, related assessments and wider approval process. Experienced review helps identify missing details early and keeps the required documentation coordinated.
Experience across thousands of Australian residential projects provides practical insight into residential compliance documentation.
Where a project requires related residential assessments, we can coordinate the required documentation without blurring the purpose of each service.
Certified Energy is represented on the NatHERS National Technical Advisory Committee, contributing to the ongoing development of residential energy assessment in Australia.
Advice is based on your plans, project requirements and compliance needs—not product sales or commissioned outcomes.
How it works
Start with the plans and project information you already have. We'll review what's available, explain what is still needed and guide you through the next steps.
Step 01
Share your available plans, drawings, specifications, schedules and any certifier comments relating to the project.
Step 02
We review the available information to confirm what can be prepared now and identify any project details that may still be required.
Step 03
Once sufficient information is available, we prepare the BASIX Certificate within the confirmed project scope and coordinate any related documentation where required.
Step 04
You'll receive your BASIX Certificate or clear guidance on any remaining information needed before it can be finalised.
Start with what you have
If your fixtures, appliances, insulation, glazing, hot water or solar selections are not final yet, send the plans and project information you already have. We'll review what's available and explain exactly what is still needed before your BASIX Certificate can proceed.
SEND YOUR PLANSFrequently Asked Questions
A BASIX Certificate records the water, energy and thermal commitments that apply to an eligible residential project in NSW. These commitments are based on the project information entered during the assessment and must be reflected in the relevant plans and construction documentation.
BASIX may apply to new homes, dual occupancies, townhouses, apartments and certain alterations or additions in NSW. The exact requirements depend on the project type, scope and approval pathway, so it is helpful to review the available plans before confirming what documentation is needed.
It is best to begin once enough design information is available to understand the project, but before the plans are treated as final. Starting early allows any missing details or required design changes to be identified before submission, reducing the risk of avoidable revisions later.
Send the plans and project information you already have. This may include architectural drawings, floor plans, elevations, window schedules, specifications, landscape information and any comments from your architect, builder or certifier. We will review the documents and explain what else is needed.
Not necessarily. Many projects begin before every fixture, appliance or building product has been selected. Where details are still undecided, we can identify which commitments must be confirmed and explain what information will be needed before the BASIX Certificate can be finalised.
No. BASIX and NatHERS are related but distinct parts of residential compliance. BASIX addresses project commitments across water, energy and thermal performance, while a NatHERS Assessment focuses on the predicted thermal performance of the dwelling. Where both are required, the documentation should be coordinated.
Changes to the design, glazing, insulation, services, fixtures or other relevant project details may affect the BASIX commitments. Send the revised plans before relying on the existing documentation so the changes can be reviewed and the certificate updated where necessary.
Send us your available plans and project details. We will review what you have, identify any missing information, confirm the appropriate scope and provide a fixed quotation for preparing your BASIX documentation.
If you'd like to understand how BASIX works before requesting a certificate, visit our BASIX Knowledge Hub. It explains who BASIX applies to, how the assessment works, the relationship with NatHERS, common project types and what information is typically required.
