Your Green Together Reward

As part of our commitment to protecting the planet, we are offering eligible customers £500 if they make energy efficient home improvements

Green mortgage reward

What is Green Together?

The Green Together Reward is a simple reward scheme open to new and existing members who apply for a mortgage or change their existing mortgage. If you spend at least £2,500 with a TrustMark registered business, making qualifying energy-efficiency improvements you can apply for our £500 Reward.


Energy-efficiency simply means using less power to perform certain tasks, like switching on a light or heating water. We have more than 20 efficiency improvements you can choose from which could reduce your energy bills and help the planet. So everyone wins.


Am I eligible?

  • You’re a customer of Coventry Building Society Group
  • You applied for a mortgage or a change to your mortgage after 28 September 2021
  • You’re planning energy-efficient home improvements of at least £2,500 that are on our approved list 
  • You’ll use a TrustMark Registered Business for the work

How to apply

Illustration of house

How to claim

  • Complete your mortgage
  • Complete your energy efficient home improvements using a TrustMark Registered Business   
  • You must use a TrustMark registered Installer who can provide you with their TrustMark licence number
  • Complete the claim form by 30 November 2023
We’ll validate the claim with TrustMark and pay £500 directly into the account you set up with us to make your mortgage payments. If you haven’t set up a Direct Debit for your mortgage payments, you’ll need to give us a call on 0800 121 8899 and let us know where we should send your £500 Reward.

Eligible works 

You can choose up to six energy-efficiency improvements from this list. You need to spend at least £2,500 and there’s no maximum spend.

Temperature control

Time and temperature zone control (for radiator systems or underfloor heating)

Additional thermostatic controls, warm air systems

Thermostatic radiator valves



Solid wall

Flat roofing

Room in roof


Cavity wall

Fill part wall

Suspended wooden floor

Solid floor

Loft insulation top-up

Renewable energy

Solar panels

Solar hot water system

Biomass boiler (wood pellets)

Wind turbine installation

Heat pumps

Air source

Ground source

Mechanical ventilation with heat recovery


Doors and windows

A-rated double or triple glazing (where replacing single glazing)

Secondary glazing (in addition to single glazing)

Draught-proofed windows

New insulated uPVC external doors (where replacing doors installed before 2002)

Draught proofed external doors


Read our FAQs

They will tell you everything you need to know

The legal stuff

Read the full terms and conditions of the reward.

Energy saving tips - find out more

Making homes more energy efficient

Around 22% of the UK’s carbon emissions come from our homes. But there are ways to make them more energy efficient, cut carbon emissions and reduce our energy bills.*

Simple energy advice 

Simple Energy Advice offers impartial guidance on how to improve a property’s energy efficiency. Find out how some simple measures can help cut the energy we use.

The Green Deal

The government’s Green Deal helps consumers make energy-saving improvements to their homes – and find the best way to pay for them. Loans or grants to cover the cost of improvements are available through the scheme.
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