0% interest Green Additional Borrowing mortgage

If you’re looking for a way to fund your energy-efficient home improvements, our 0% interest Green Additional Borrowing mortgage could help. Get 0% interest on your borrowing for the first 2 or 5 years.

Using the 0% Green Additional Borrowing mortgage

Features and benefits:

Choose from a 2 or 5 year fixed rate mortgage.
Get 0% fixed interest for the first 2 or 5 years.
Borrow £5,000 to £20,000, depending on your circumstances.
Borrow up to 90% of the property value (LTV).
There are no product fees with this mortgage.

Be aware that:

100% of the loan must be used to make energy-efficiency improvements to your home. Such as: a boiler upgrade, solar panels, air source heat pumps, cavity wall insulation, double glazing or replacement windows, electric car charging point, loft insulation. Exclusions may apply.
Your 0% interest rate will stop when your fixed deal period ends. Any outstanding amount will automatically move onto our variable Standard Mortgage Rate (SMR). Or you may able to switch to another rate, subject to availability and eligibility.
There is a limit of one Green Additional Borrowing mortgage per property.
This product is limited and can be withdrawn at any time.

To apply for a Green Additional Borrowing mortgage:

You need to be an existing member with a Nationwide mortgage that has had at least 1 monthly payment made on it.
Your existing mortgage, combined with the additional borrowing, is not more than 90% of the value of your home.
The mortgage term of the additional borrowing cannot exceed the mortgage term of the existing main mortgage account.
Spend 100% of your additional borrowing on eligible energy-efficient home improvements.

Representative example

A mortgage of £13,813.96 over a term of 11 years on an initial 5 Year Fixed Rate (green purposes only) at 0% (fixed) would require 60 monthly payments of £104.65 and 72 monthly payments of £128.43 based on our Standard Mortgage Rate, currently 6.99% (variable). The total amount payable would be £15,522.15 made up of the loan amount plus interest (£1,708.19), product fee (£0.00) and valuation fee (£0.00). The overall cost for comparison is 2.0% APRC Representative.

This representative example is for illustration purposes only. It is not an offer. These figures are representative of the typical costs and repayments for this type of mortgage based on customer type. Your actual costs and monthly repayments will vary depending on your mortgage.

What improvements are best for your home?

To find out what energy-efficient improvements are suitable for your home, use our Home Energy Efficiency Tool. It will ask you a few questions about your home. Based on your answers, it will tell you what improvements you could make, the work involved and the potential costs.

Go to the Home Energy Efficiency Tool

Going green – one home at a time

We think the move to a green society and a greener world should begin at home. And we’re doing our bit to help. Discover Nationwide’s commitment to going green, and how it could help you.

Find out more about going green

Ways to apply

Apply through online banking

If you’re already registered for the internet bank, you can apply by logging in. If not, open the internet bank below and ‘Register now’ in the top right corner to get started.

Once you've completed your decision in principle online, you’ll be offered an appointment with one of our mortgage advisers who will guide you through the rest of the process.

Download our banking app*

Get the app from the App Store* on an Apple device or from Google Play on an Android device. Search 'Nationwide mobile banking'.

And join over 6 million of our members. Safe, secure everyday banking made easier.

You cannot apply online:

If you’ve had your existing mortgage less than 6 months.
If you've used any of the affordable home ownership schemes to purchase your current home, such as Right to Buy.
You have a Lifetime or retirement mortgage for over 55s.

For these types of mortgage, please apply over the phone.

0345 609 25 30

Need help with borrowing more?

If you’d prefer to speak to someone, you can give us a call. One of our mortgage representatives will complete your decision in principle. If it’s accepted, we’ll book you in for advice with a mortgage adviser, either by phone or video call.

For video appointments, you’ll receive an email with details of what you’ll need and how to join the call.

Monday to Friday, 8am to 6pm.
Saturday 8:30am to 4pm.
Closed Sundays and bank holidays.