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Gorvins Residential What Is An EPC And Why Do I Need It?

What Is An EPC And Why Do I Need It?

Last Updated: November 28th, 2025

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With energy prices remaining a headline topic for households across the UK, the humble Energy Performance Certificate (EPC) has graduated from a piece of filing cabinet paperwork to a vital document.

Whether you are selling, renting, or buying, this certificate is now a key factor in the valuation and desirability of a home. It is also a strict legal requirement. So, what exactly is an EPC, and why is it more important now than ever?

What is an EPC?

An Energy Performance Certificate (EPC) is a standardized document that rates the energy efficiency of a building. Much like the multi-coloured stickers you see on new fridges or washing machines, an EPC ranks a property on a scale from A (most efficient) to G (least efficient).

The certificate is valid for 10 years once issued. It provides a snapshot of how costly the property is to heat and light, and—crucially—what its carbon dioxide emissions are.

Why is it Important?

Beyond being a piece of paper, the EPC carries significant legal and financial weight. Here is why you cannot ignore it:

1. It is the Law for Sellers and Landlords

If you are marketing a property for sale or rent, you must commission an EPC. It is a legal requirement to have this available for potential buyers or tenants as soon as you start marketing.

Failure to provide one can result in a fixed penalty fine of £200 per breach. Given that the cost of arranging an assessment is relatively low, risking the fine simply isn’t worth it.

2. Crucial for Landlords (The “C” Grade Pressure)

For buy-to-let investors, the EPC is critical. Currently, you cannot legally rent out a property if it has a rating below an ‘E’.

However, the regulatory landscape is shifting. With proposals to raise the minimum energy efficiency standard to a ‘C’ rating by 2030, many landlords are facing significant renovation costs to stay compliant. The looming cost of retrofitting older homes to meet these targets is a primary driver for those currently selling a rental property to avoid the impact of the upcoming Renters’ Rights Bill and stricter energy laws.

3. Negotiating Power for Buyers

If you are buying a home, the EPC is one of your most powerful tools.

  • Budgeting: It gives you a realistic estimate of your future energy bills.
  • Negotiation: If a property has a poor rating (F or G), you can use this as leverage to negotiate a lower purchase price, citing the cost of the insulation or heating upgrades you will need to install immediately after completion.

4. A Roadmap to Lower Bills

An EPC doesn’t just give you a grade; it gives you a plan. Page two of the certificate lists recommended improvements—such as installing cavity wall insulation, upgrading the boiler, or switching to LED lighting.

It tells you:

  • How much the improvement typically costs.
  • How much money it could save you per year.
  • What the new EPC rating would be after the work is done.

Are Any Buildings Exempt?

This is a common question, especially in areas like Alderley Edge or historic parts of Stockport. Not every building requires an EPC. The most common exemptions include:

  • Listed Buildings: If compliance with energy efficiency requirements would unacceptably alter the building’s character or appearance (e.g., you can’t install double glazing because it’s Grade II listed), you may be exempt.
  • Places of Worship: Churches, mosques, and other religious buildings.
  • Temporary Buildings: Those intended to be used for less than two years.
  • Holiday Accommodation: Rented out for less than 4 months a year.

However, never assume you are exempt. Always check with your solicitor or estate agent first, as getting this wrong can delay your sale.

Frequently Asked Questions about EPCs

Does a good EPC rating increase house value? Yes, increasingly so. Research suggests that moving a property from a rating of G to E, or D to C, can add significant value. Buyers are now “energy conscious” and often pay a premium for “move-in ready” homes that won’t require expensive retrofitting.

What happens during the assessment? An accredited Domestic Energy Assessor will visit your property. They need access to every room to inspect:

  • The size and layout of the building.
  • The construction (cavity wall, solid brick, etc.).
  • Insulation (loft and wall).
  • Heating systems and controls (boiler, thermostat, radiators).
  • Windows (single, double, or triple glazing). The visit usually takes 45–60 minutes.

Can I sell my house with an F or G rating? Yes, you can sell a residential home with a low rating (unlike renting, which requires a minimum of E). However, be prepared for buyers to factor this into their offer, as they will likely want to undertake works to improve it.

How do I get an EPC? If you are selling your home with Gorvins Residential, we can check if your property already has a valid EPC on the national register. If you need a new one, we can point you in the direction of accredited local assessors to ensure your paperwork is compliant ready for a smooth sale.


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Gorvins Residential is the trading name of
Gorvins Residential LLP

Dale House,
Tiviot Dale,
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