What is an EPC rating?

An EPC or Energy Performance Certificate, shows how energy efficient a property is. The higher the rating, the lower your energy bills are likely to be. An A-rating being the best, a G-rating needs the most improvement.

Find out how to get one, what the assessment involves, and how they can impact your mortgage application.
 

 

Checking your rating

Before you get an EPC, you can check if the property already has one on the government’s website.

If you’re in England or Wales, you can find an energy certificate on GOV.UK.

If you’re in Scotland, you can find an energy certificate on the Scottish EPC Register.

An EPC is valid for 10 years from the date of issue. If you do any work on the house in that time though, you may need a new one as your rating may have changed.

What does an EPC tell you?

The certificate rating looks like the multicoloured stickers you find on new appliances. The EPC report gives you:

  • an indication about a property's potential energy use
  • how much this is likely to cost over the next three years
  • how to improve the rating
  • what the potential rating could be if you make improvements.
Multicoloured bar chart showing energy rating score out of 100. A: 92 – 100, B: 81 – 91, C: 69 – 80, D: 55 – 68, E: 39 – 54, F: 21 – 38, G: 1 – 20

Energy efficiency ratings explained


The property’s energy efficiency is scored out of 100 and then given an overall rating. From A being the most energy efficient, to G being the least.

As well as the current rating, the chart shows the property’s potential EPC rating. This helps you see what could be achieved if you carried out suggested improvements, which are listed in priority order.

Ratings for new build properties

New builds don’t have EPC ratings if they are sold ‘off-plan’. Instead, the builder or developer may have arranged for a Predicted Energy Assessment (PEA).

Once the house is built, they’ll then get an EPC. New builds tend to be built to a high energy-efficiency standard. So are likely to have a higher EPC rating.

How do EPC ratings affect my mortgage application?

When you apply for a mortgage, we decide how much you can borrow based on your individual circumstances. This includes things like your income, outgoings and credit score. It also includes the energy efficiency rating of the house you want to buy.

You might receive a higher loan amount if the EPC rating is an A or B. Or you might receive a slightly lower loan amount if the rating is F or G. This is because your monthly outgoings will be higher if you’re having to pay more on energy bills.

Let's break this down

How do you get an Energy Performance Certificate?

Accredited energy assessors issue EPCs after visiting the property and carrying out an assessment.

You can find a local assessor and book an assessment online on the government website.

How much does an Energy Performance Certificate cost?

There isn’t a set price. The cost of an EPC will vary by assessor, as well as the size, type and location of the property.

As a guide, you can expect to pay between £60 and £120.

How long does an assessment take?

The EPC assessment itself tends to take less than an hour. But it will depend on the size of the property. It’s worth asking how long the assessment will take when you’re booking it in. The EPC will then probably take a few days to show on the government database.

Paying for energy-efficient home improvements

Learn how we could help you put your plans into action.
 

Funding home improvements

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How to improve your rating

Read our quick guide on improvements you can make to your home.

Improve your EPC rating

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