Ready to make your home greener?

Published: 11 June 2026

Introducing green additional borrowing

If you’re ready to make energy-efficient home improvements, our green additional borrowing product could help you get there. It’s designed to support existing residential or buy to let mortgage members by borrowing more on your mortgage to support a range of energy-efficient home improvements:

Air source heat pumps
Ground source heat pumps
Cavity wall insulation
Double/triple glazing
Electric car charging installation
Loft insulation
Underfloor wet heating systems
Solar PV and storage batteries
Low energy lighting
Smart water tanks

Take a look at our green additional borrowing range.

You’ll need to provide a quote for the proposed work when applying. Affordability and lending criteria apply. With our green additional borrowing, you could bring your energy efficient improvements to life.

Additional borrowing will be secured against your property, and the overall mortgage balance will increase.