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Before you buy and install upgrades 

It's important to get independent professional assessments and checks to ensure they’re right for your home and local climate. You can consult with experts like builders, engineers and suppliers. You can also compare different quotes to find the best one for you. 

Explore how you could upgrade your home

Discover estimated energy bill reductions with Cogo’s online Home Energy Tool

Cogo’s Tool quickly estimates the energy efficiency of a comparable home to yours.

In minutes, get energy-efficient upgrade suggestions and information on:

  • Typical upgrade costs
  • Estimated energy bill reductions, and
  • Potential rebates

Cogo is a third-party platform. The Home Energy Efficiency Tool is offered by Cogo and not Westpac Banking Corporation (Westpac). Use of the Tool is not required to apply for a Sustainable Upgrades Home or Investment Loan.

Energy-efficiency: What type of upgrades can I make? 

Choose energy-efficiency upgrades from our approved provider Origin. Remember to do your own research. And gather quotes before applying for a Sustainable Upgrades home or investment loan

Sustainable upgrade offers from our approved providers

Qualifies for our cool interest rate

Quotes with Origin

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Climate-resilience: What type of upgrades can I make?

Eligible products 

  • Flooring system with non-combustible materials
  • External walls with non-combustible or fire-resistant material
  • Roofing with non-combustible materials, sealant and coating: Tiles, sheets and covering accessories, framing, external finishes and insulation; full sark sheet; tiled roofs
  • Window fixings: non-combustible window frame; metal flyscreens or shutters; toughened glass in window glazing; fire rated window
  • Doors built with non-combustible material or solid timber
  • Doors with metal screens or bushfire shutters   
  • Fully framed glazed doors with the frames constructed of a bushfire-resisting timber  
  • Weather strips  
  • Draught excluders, or draught seals
  • Fencing within 1.5m of the property using non-combustible materials, like cement fibre, metal, chain link or stone

Must be:

  • Installed by a licensed tradesperson; and
  • Installed in line with National Construction Code (NCC) guidelines; and
  • Non-combustible as defined under the NCC 2022 Volume 2 Class 1 building. A list of materials that fall within the definition of ‘non- combustible’ are listed in the NCC 2022: Part C2D10 subsection (5) and (6)

Evidence when applying

Provide a quote from your supplier or installer, showing:  

  • Upgrade details (where applicable) including make and model; and
  • Their company name and trades’ license number; and
  • The property address for the installation

Evidence for payment

Request payment from your loan, by signing and sending us the tax invoice from your supplier or installer, showing:  

  • Upgrade details (where applicable) including make and model; and
  • Their company name and trades' license number; and
  • The property address for the installation; and
  • Confirmation that the upgrade has been successfully installed at the property

Eligible products

  • Raise above flood levels: Air condition condenser units, electrical systems and switchboard (including data and electrical points), hot water unit and water tank
  • Separate circuits with breakers on upper and lower levels
  • Solid core, aluminium, glass or corrosion resistant doors, frames, and windows
  • Permeable garage doors
  • Flush door thresholds, including removing all thresholds that obstruct drainage and discharge of flood waters  
  • Sealing frames to building fabric

Must be:

  • Installed by a licensed tradesperson; and
  • Installed in line with National Construction Code (NCC) guidelines; and
  • Water resistant, as defined in NCC 2022, means: The property of a system or material that restricts water movement (won’t degrade under conditions of moisture)

Evidence when applying

Provide a quote from your supplier or installer, showing:

  • Upgrade details (where applicable) including make and model; and
  • Their company name and trades’ license number; and
  • The property address for the installation

Evidence for payment

Request payment from your loan, by signing and sending us the tax invoice from your supplier or installer, showing:  

  • Upgrade details (where applicable) including make and model; and
  • Their company name and trades’ license number; and
  • The property address for the installation; and
  • Confirmation that the upgrade has been successfully installed at the property

Eligible products

  • Solid core doors, drop bolts and heavy-duty hinges to withstand wind loads
  • Windows for improved wind rating (including water penetration performance), including window seals and configuration of weep holes
  • Cyclone screens or shutters over windows to protect from debris
  • Over batten roofing system
  • Replace rusted or rotten structures (e.g. a rotten timber batten)

Must be:   

  • Installed by a licensed tradesperson; and
  • Installed in accordance with National Construction Code (NCC) guidelines

Evidence when applying

Provide a quote from your supplier or installer, showing:

  • Upgrade details (where applicable) including make and model; and   
  • Their company name and trades’ license number; and 
  • The property address for the installation

Evidence for payment

Request payment from your loan, by signing and sending us the tax invoice from your supplier or installer, showing:  

  • Upgrade details (where applicable) including make and model; and
  • Their company name and trades’ license number; and
  • The property address for the installation; and
  • Confirmation that the upgrade has been successfully installed at the property

FAQs

No. The maximum loan amount is $50,000. If your eligible sustainable upgrades exceed this amount, you’ll need to cover the difference using your own funds. 

Only one Sustainable Upgrades loan is available for a property. 

Book an appointment with a lender. You may still qualify for approval if your invoice is yet to be paid.

If an upfront deposit is required, you'll need to pay this amount from your own funds. When your loan is open and you’ve received the final invoice, please send it to us to request payment. Once it is approved for payment, we’ll reimburse you for any deposit paid showing on the invoice, and then pay your supplier or installer the outstanding balance.  

Things you should know

Conditions, credit criteria, fees and charges apply. Residential lending is not available for Non-Australian Resident borrowers.

This information is general in nature and has been prepared without taking your personal objectives, circumstances and needs into account. You should consider the appropriateness of the information to your own circumstances and, if necessary, seek appropriate professional advice.

Any tax information described is general in nature and it is not tax advice or a guide to tax laws. We recommend you seek independent, professional tax advice applicable to your personal circumstances.

Key Fact Sheet for Home Loans


1Cogo: The Home Energy Efficiency Tool (the Tool) is offered by Cogo and not Westpac Banking Corporation (Westpac). The Home Energy Efficiency Tool is not exclusive to Westpac customers. Use of the Tool is not required to apply for a Sustainable Upgrades Home or Investment Loan.

By accessing Cogo's Tool, you will enter a third-party site not owned by Westpac. Any personal information you provide to Cogo's website will be collected, used and disclosed in accordance with Cogo's Privacy Policy, also available on their website.

Cogo is responsible for the accuracy and completeness of the information provided by the Tool. Westpac gives no representation, warranty, or guarantee (including as to the quality, accuracy or completeness) of the information. You can access Cogo’s disclaimer on their website.

Westpac has paid Cogo a fee for the provision of the Home Energy Efficiency Tool. Cogo is not a referral partner of Westpac for consumer credit, including in relation to the Sustainable Upgrades Home Loan (SUHL). Westpac does not and will not pay or receive any commissions to or from Cogo for customers who take up the SUHL. Cogo will not provide any credit assistance to Westpac customers.

You should carefully consider whether the information provided by Cogo is suitable for your situation. We recommend seeking independent professional assessments and obtaining quotes to ensure the upgrades are appropriate for your home and local climate before making any changes.


Origin: Westpac and Origin Energy have a referral arrangement. If you ask Origin Energy for a quote for energy upgrades, they send you to SolarQuotes. SolarQuotes is a subsidiary of Origin Energy. SolarQuotes is separate from Westpac. It gives you quotes from installers. Westpac is a credit provider that may provide financing for your energy upgrades. 

What this means for you

  • SolarQuotes runs an online platform. Any details you enter into the SolarQuotes platform goes to Origin Energy and SolarQuotes, not Westpac. SolarQuotes and Origin Energy each have their own Privacy Policy. This can be accessed on their websites. This details how they manage your personal info. 

  • You choose the installer you want. You must also check that the installer has a licence. 

Important details

  • Westpac does not pay commissions to, or receive commissions from, Origin Energy or SolarQuotes. 

  • Westpac is a credit provider. Westpac holds an Australian Financial Services Licence and an Australian Credit Licence (233714). 

  • Origin Energy is an energy provider. Its subsidiary, SolarQuotes, helps customers find installers. These companies are not part of the Westpac Group. 

  • Westpac does not promise anything about the quality or safety of installers found through them. We have not checked or approved these installers or their licences. 

  • Their products and services are not exclusive to Westpac.