Need a BASIX Certificate for a NSW residential project? Send us your plans and project details. Certified Energy will review the available information, confirm what is required and guide you through the next step.
Send us your plans and project details. We’ll confirm what is required and guide the next step.
Not sure whether you need BASIX, NatHERS or both? Send the documents and we’ll confirm the pathway.
Usually helpful to include:
Before you submit:
Upload your project documents or send the details you have. We’ll review the information and respond with the next practical step.
Certified Energy works with homeowners, architects, building designers, builders and residential developers who need clear BASIX guidance for approval and documentation.
For new residential dwellings requiring BASIX documentation as part of the NSW approval process.
For alterations, additions and renovation projects where BASIX requirements may apply depending on the project scope.
For duplexes, townhouses and small residential developments that need coordinated BASIX and energy assessment support.

The BASIX process does not need to feel complicated. Once we receive your available documents, we review the project and confirm the practical next step.
Upload your plans, elevations, sections and project details through the quote form.
Our team checks the available information and confirms what is likely to be required.
If BASIX, NatHERS or thermal performance work is needed, we’ll explain the next step clearly.
Once the scope is confirmed, we prepare the required assessment and certificate documentation.
You do not need a perfectly complete documentation package before enquiring. For many projects, plans, elevations, sections and basic project details are enough for us to begin reviewing the likely BASIX requirements.
If additional information is needed, we’ll let you know clearly rather than leaving you to guess.

BASIX and NatHERS often sit close together in residential energy compliance. Depending on the project, thermal performance assessment may be needed as part of the BASIX pathway.
Certified Energy can review your project documents and confirm whether your BASIX Certificate also requires NatHERS or related thermal performance work.
Learn more about NatHERS assessments or Send your project documents for review.
BASIX requirements can affect design decisions such as glazing, insulation, water fixtures, hot water systems, ventilation and thermal performance commitments.
Reviewing these requirements early can help reduce late design changes and give your architect, designer, builder or certifier clearer information to work with.
If your project is already underway, we can still review the available documentation and confirm the next practical step.

You can still send us the available information. We’ll review your project details and confirm whether BASIX, NatHERS or another residential energy assessment is required. Send your project documents for review.
Frequently Asked Questions
A BASIX Certificate is a NSW residential sustainability requirement that records water, energy and thermal performance commitments for a residential project. It is commonly needed as part of the approval documentation for new homes, renovations, additions and multi-dwelling residential projects in New South Wales.
BASIX is commonly required for NSW residential projects as part of the development approval process. The exact requirement depends on the project type, scope of work and approval pathway, including whether the project is being submitted through DA, CDC or another residential approval process.
Yes. Send us the available project documents and we’ll confirm the likely BASIX requirements and next practical step. If your project also needs NatHERS or another residential energy assessment, we can let you know before the assessment proceeds.
Plans, elevations, sections, the project address and basic project details are usually enough to begin. If you have a window schedule, NatHERS information, consultant comments, DA or CDC documentation, or any early design notes, include those as well.
Once we receive your project documents, our team can review the available information and confirm the next step. The timing of a formal quote may depend on the project type, document quality and whether BASIX, NatHERS or additional assessment work is required.
Yes. You can send the information currently available. Your drawings do not always need to be final before you make an enquiry. If more detail is needed before the BASIX assessment can proceed, we’ll let you know clearly rather than leaving you to guess.
Yes. Certified Energy can assist with BASIX Certificates for NSW residential projects being prepared for DA or CDC submission. The required pathway will depend on the project type, scope and approval documentation.
Some projects require NatHERS or a related thermal performance assessment as part of the BASIX pathway. BASIX and NatHERS often sit close together in residential energy compliance, and we can review your documents and confirm what is needed.
Yes. BASIX may apply to alterations, additions and renovation projects depending on the scope of work and approval requirements. Send us the available plans and project details and we can confirm the likely requirement.
Yes. Certified Energy works with homeowners, architects, building designers, builders and residential developers across NSW. We can help review the available project information and guide the BASIX or related residential energy assessment process.
Yes. You can request a BASIX quote before every document is final. Early review can help identify what is missing, what is likely to be required and whether the project may also need NatHERS or another residential energy assessment.