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Best Remortgage to Improve Your EPC Rating 2026

Remortgaging to fund efficiency upgrades that improve your EPC rating can unlock cheaper green deals, cut bills, and add value. This guide covers the best lenders, which upgrades move the EPC needle, and the green-deal rewards in 2026.

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Quick Answer: Best Remortgage to Improve EPC Rating in 2026

Remortgage to fund EPC upgrades via mainstream lenders (Halifax, Nationwide, Santander, Barclays, NatWest) as a home improvement, then — once the EPC improves — switch to a green remortgage with a discounted rate or cashback. The biggest EPC gains usually come from insulation (loft, cavity, solid wall), efficient heating, double/triple glazing and renewables. Reaching EPC A/B/C can unlock the best green deals. A broker sequences the capital raise and the green switch to maximise savings.

Rates last reviewed June 2026. Figures shown are indicative market ranges to help you compare — not live quotes or personalised offers. Mortgage rates change daily and depend on your circumstances, the lender's criteria and the Bank of England base rate. Check live rates for your profile →

Which Upgrades Improve Your EPC Most

Not all improvements move the EPC needle equally:

A fresh EPC assessment after the work documents the improved band, which lenders use to qualify you for green deals.

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Gary from London

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Gary, London
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"I kept putting off remortgaging because I thought it would be a massive headache. Honestly, the whole thing was painless — filled in a quick form, got my options, and it was all sorted within weeks. Wish I'd done it sooner."
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"Our fixed rate was ending in a month and I was panicking about going onto the SVR. Managed to get everything sorted really quickly and we're now on a much better rate. Saving us about £200 a month."
Janet from Exeter

"So Much Better Off"

Janet, Exeter
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"Was a bit nervous about switching as I'd been with the same lender for years. Turns out I was massively overpaying — got a much better deal and the whole process was far easier than I expected."
Lucy from Tamworth

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Lucy, Tamworth
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"After having to pay a ridiculous amount due to the interest rate hike, we have now got a more suitable monthly payment, consolidated a loan and have money left for hopefully a loft conversion."

Why a Better EPC Pays Off (2026)

BenefitWhat it means
Green remortgage accessDiscounted rate or cashback for higher EPC
Lower energy billsEfficiency cuts ongoing running costs
Higher value & saleabilityEfficient homes increasingly favoured by buyers
Future-proofingAhead of any minimum-EPC requirements

The combination of a cheaper green mortgage rate, lower bills and a more saleable home can more than justify funding the upgrades — particularly when borrowed at a low mortgage rate.

How to Improve Your EPC Cost-Effectively

To maximise the payoff:

Best Alternatives and Related Options

Related routes for energy upgrades:

Important: Your home may be repossessed if you do not keep up repayments on your mortgage. There will be a fee for mortgage advice. The actual rate available will depend on your circumstances. Think carefully before securing other debts against your home.

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Frequently Asked Questions

Yes — you can remortgage as a home improvement (via mainstream lenders like Halifax, Nationwide, Santander, Barclays and NatWest) to fund efficiency upgrades, then switch to a green remortgage once your EPC improves. The biggest EPC gains usually come from insulation, efficient heating, glazing and renewables. Reaching EPC A, B or C can unlock the best green deals with discounted rates or cashback. A broker sequences both steps.

Insulation — loft, cavity-wall and especially solid-wall — often delivers the biggest EPC gains per pound by cutting heat loss. Efficient heating (a new boiler or heat pump), double or triple glazing, and renewables like solar panels also lift the score significantly. Smart heating controls and LED lighting give smaller, cheaper gains. A fresh EPC assessment after the work documents the improved band for green-deal eligibility.

Often yes — many lenders now offer green remortgage deals with a discounted rate or cashback for homes with higher EPC ratings (typically A, B or C). So improving your EPC can directly unlock a cheaper mortgage, on top of lower energy bills and improved saleability. The exact reward varies by lender and EPC band. A broker can identify which green deals you'd qualify for after your upgrades.

You arrange a fresh EPC assessment after completing the upgrades, which produces an updated certificate showing your new, higher rating. Lenders use this updated EPC to qualify you for green remortgage deals. EPCs are lodged on the national register, so lenders can verify them. Sequencing matters: complete the work, get the new EPC, then remortgage to the green deal — a broker can coordinate this.

Frequently yes — the combination of a cheaper green mortgage rate, lower energy bills, higher value and better saleability can more than justify funding efficiency upgrades, especially when borrowed at a low mortgage rate and combined with grants for heat pumps or insulation. It also future-proofs your home ahead of any tightening minimum-EPC requirements. Target high-impact upgrades like insulation first for the best return.

Yes — grant schemes such as the Boiler Upgrade Scheme support heat pumps, and various insulation grants are available depending on your circumstances and location, which reduce the amount you need to remortgage for. Combining grants with low-rate borrowing is the cheapest way to fund EPC improvements. Grant availability changes over time, so check current schemes. A broker can advise on combining grants with a green remortgage.

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