Green additional borrowing

Benefit from a lower rate when you borrow more for energy efficiency improvements

You’re eligible if:

  • you have a Buy to Let or a residential mortgage with us
  • you’ve had your mortgage with us for at least six months and you’ve made six consecutive monthly mortgage payments
  • you're not currently on an Offset product. You can find details about your Offset mortgage here.

Here’s how it works:

  • borrow up to £25,000
  • spend at least 50% of the money you borrow carrying out energy efficiency improvements – we’ll need to see a quote for the work when you apply
  • use the rest of the money for other home improvements (if relevant)
  • at the end of your initial rate period, your product will either revert to our Standard Variable Rate (SVR), or you can switch to a new product from our core Product Transfer range available at that time.


What's included?

There’s a whole range of efficiency improvements that qualify for Green additional borrowing, including insulation, window and door improvements, and heating and energy installations. Take a look at which improvements are eligible.


See Green additional borrowing options

Read our FAQs

They will tell you everything you need to know.

Is there a fee to pay?

Green additional borrowing is available on a fixed rate, and there’s no product fee to pay.

Can I use the rest of the money however I choose?

The rest of the loan needs to be used for home improvements, but they don’t have to be to make your home more energy efficient.

How do I apply?

Have a look at the work that’s eligible for the Green additional borrowing. We suggest getting at least three quotes before making any decisions. You can apply for the further advance by calling us on 0800 121 8899. We’ll need to see the quote or quotes you’ve obtained before we can agree your Green additional borrowing.


Quote must be on headed paper and include labour and materials.

Can I use any supplier or tradesperson to do the work for me?

We recommend that you use a TrustMark Registered Business because they’re thoroughly vetted for customer service and quality. If there’s any problem with the work they provide, TrustMark will also help to put things right.

What if I have a property that’s mortgaged with another lender?

The Green additional borrowing is only available to customers who have a mortgage with Coventry Building Society, Godiva Mortgages Limited or ITL Mortgages Limited.
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Our help section is bursting with useful information. If you'd rather chat, just give us a call.


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0800 121 8899

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