Last Updated: 7th November, 2022

What is a green home loan?

A green home loan is one that rewards borrowers for either buying, building or renovating a property to make it sustainable and energy efficient.

Some of the ways borrowers are rewarded for going green are:

  • Banks and lenders offer discounts on their home loan interest rates.
  • Cashbacks and rebates from local, state and federal governments.
  • Offer higher LVR of up to 95% on home loans
  • Some banks even provide additional funding to support sustainable home improvements.
  • Borrowers can get an increased loan amount compared to standard home loans.

Are green home loans available in Australia?

Yes, there are a few banks and lenders that are offering green home loans.

  • ANZ
  • Commonwealth Bank
  • NAB
  • Firstmac
  • Gateway Bank
  • Regional Australia Bank
  • Bank Australia
  • RACQ Banbk

What are its advantages and disadvantages?

Advantages of green home loans Disadvantages of green home loans
Enjoy lower interest rates Limited lenders
Your energy efficient home reduces environmental footprint which contributes to a more sustainable future. Strict lending criteria which varies from lender to lender.
Lower energy bills as you’re building, renovating or buying a home with sustainable design. The lenders and banks could enforce fees and charges.

Why should I opt for a green home?

There are several advantages to a green home:

  • Your home will have a significantly smaller carbon footprint compared to the standard homes in Australia.
  • You save on electricity bills as your home is designed to consume less energy. An energy efficient green home uses 66% less electricity, emits 62% less greenhouse gases, uses 51% less potable water compared to an average new construction project.
  • Your home will be designed in an efficient way to make living comfortable and practical. Green homes are designed with proper ventilation and abundant sunlight. Furthermore, the homes are also built with low-toxic materials, which reduces the risk of respiratory problems like asthma.
  • You can get access to discounted rates and rebates.
  • The value of your property will increase, which would help its resale value. A study conducted in ACT revealed that even a half star energy rating increase in energy efficiency translated to a 2% increase in capital value.

What is the NatHERS rating?

The Nationwide House Energy Rating Scheme (NatHERS) home energy star ratings is a performance-based rating system that rates the thermal performance of a home on a scale of 0 to 10.

Homes which have a higher rating are considered thermally comfortable and affordable to run than those with lower ratings.

Here is what each NatHERS rating mean:

No. of stars Meaning
0 stars The building shell does nothing to reduce the discomfort of hot or cold weather.
6 stars This is the minimum standard in most states and territories. It is considered a good performance.
10 stars The home does not require any artificial cooling or heating to keep you comfortable.

Please note that NatHERS does not include hot water systems, lights and household appliances since these are replaced frequently.

How is the energy rating calculated?

NatHERS uses an accredited software that will model expected indoor temperatures based on data specific to the dwelling.

The data specific information includes information on:

  • Size and function of the homes
  • Size and specification of openings
  • Building materials, windows and products
  • Type of construction
  • Dwelling orientation
  • Location

Once these data are entered into the system, the software will then model how much cooling or heating the occupants need to stay comfortable during a typical year, factoring how the local climate heats and cools the house every year of each day of the year.

The total annual heating and the cooling requirement are then converted to the 10-star rating.

How to qualify for a green home loan?

Every lender has their own requirements a borrower must fulfill to get approved for a green home loan.

These customer owned banks are offering green home loans, under different names:

Clean Energy Home Loan

There are two ways you can qualify for a Clean Energy Home Loan:

  • 7 Star+ criteria
  • Property upgrade criteria

The loan can be for owner-occupier or investment loan and the loan amount must be less than $1.5 million. Furthermore, the borrower must be a resident of Australia and the property securing the loan is located in Australia.

The 7 Star+ criteria offers an interest rate discount for homes that meet a high standard of energy efficiency, and the property must have a 7 stars or higher NatHERS rating.

The property upgrade allows for a discount of up to five years to renovate an existing property with green home upgrades. There must be a 1 star improvement to the energy efficiency assessment.

The property should have three or more of the following upgrades within the last 12 months:

  • Installation of real-time energy monitoring systems (Wattwatchers, Solaranalytics, etc.)
  • A solar photovoltaic system with a minimum system size of 3kW.
  • Energy storage system with a minimum system of 5kWh.
  • Hot water heat pump or solar hot water system.
  • Upgrade 75% or more of all windows by area to double-glazed and/or low-emissivity coatings.
  • Upgrade underfloor, wall and ceiling insulation to levels set by the National Construction Code.
  • Electric vehicle charging port and evidence of electric car ownership.
  • Upgrade LED lights for 75% or more of all light fixtures.
  • If the property has air conditioning, it must have an energy rating of 4 stars and above the Minimum Energy Performance Standards.
  • If the property has a pool, there must be a pool pump with a energy rating of 7 stars under the Voluntary Energy Rating Labelling Program.

Sustainable Home Loan

To qualify for a Sustainable Home Loan:

  • Must be owner-occupier.
  • The minimum amount you can borrow is $500.
  • The maximum loan term is for 30 years.
  • Can build new home or renovate existing home.
  • Home must pass the current minimum environmental standards according to the relevant state or territory.
  • Must have at least ONE feature from List A and TWO features from List B.
List A (Any one) List B (Any two)
Grey water treatment system Solar hot water
Solar power system (including PV) Rain/storm water tank
Wind turbine 5 star+ Gas or Electric heating
Micro hydro system External awnings
Double glazed windows (or better)
Other bansk are offering green loans at competitive rates to make your existing property energy-efficient:

Green loans

A major bank is offering loans to switch to solar and make your home energy efficient. It is offering a low fixed rate to existing customers who have a home loan or investment loan. The minimum loan size is $5,000, and the maximum is $20,000. The loan to value ratio of your exisitng home loan or investment loan plus the green loan should not exceed 80%. If you have multiple properties and home loans with the bank, you can apply for more than one green loan. The green loan can only be used to buy or install eligible clean energy products:
  • Solar panels with a system size equal to or greater than 6 kilowatts (kW) (and inverter if applicable)
  • Battery packs with a system size equal to or greater than 5 kilowatt-hours (kWh)
  • Solar hot water system with a minimum system size equal to or greater than 250 litres (L)
  • Heat pump hot water system with a system size equal to or greater than 250L
  • Electric vehicle charging station(s)
A Clean Energy Council member must install these products. The green loan cannot be to recoup purchases and installations already done to the property.

Green loan discount

A non-bank lender is offering a discount on your home loan interest if your home has a NatHERS of at least 7 Star.