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What is a green mortgage?

3 min read
Oct '25 • by Heather

Quick summary

A green mortgage is a loan that rewards energy-efficient homes with lower interest rates or cashback, helping you save on bills and increase property value. To qualify, your home needs an EPC rating of ‘A’ or ‘B’, or you must make improvements to reach that level. It’s part of the UK’s plan to cut carbon emissions by 2050.

You’ve heard of fixed rate mortgages, tracker mortgages, and discount mortgages. But what is a green mortgage? In this article, we explain everything you need to know: what they are, how they work, and if you’re eligible for one.

What is a green mortgage?

A green mortgage rewards you for buying or owning an energy efficient home. The same rule applies if you make improvements or renovations to your home to make it more energy efficient.

How do green mortgages work?

Green mortgages can be split into three main types:

  • Cheaper rates for properties with high energy efficiency ratings (i.e., EPC rating of ‘B’ or above)
  • Standard mortgages that offer cashback to homebuyers who buy energy-efficient properties
  • Standard mortgages that offer cheaper rates, or cashback, when homeowners make energy efficient improvements

The main point of a green mortgage is to incentivise homeowners to be greener.

See how much you can borrow

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