EPC ratings explained: How to improve your score before selling

Key takeaways: Improving your EPC rating

• Legal requirement: An Energy Performance Certificate (EPC) is mandatory for most properties being sold or rented in the UK, providing an energy efficiency rating from A (most efficient) to G (least efficient).
• Seller's advantage: A higher EPC rating can make your home more attractive to buyers, potentially increasing its value and speeding up the sale, as it signals lower future energy bills.
• No minimum requirement (yet): As of June 2026, no minimum EPC rating is required to sell a property, but future regulations may introduce this. Improving your rating is a forward-thinking investment. A rating of E is recommended.
• Cost-effective upgrades: Simple improvements like LED lighting, improved insulation, and draught-proofing can significantly boost your rating without breaking the bank.
• Professional assessment: An accredited energy assessor conducts an EPC survey, evaluating your home's energy features to produce the certificate and recommend improvements.

Selling your home is a significant undertaking and presenting it well is essential. One often-overlooked aspect that can make a difference is your home's Energy Performance Certificate (EPC) rating. This document provides clear insights into your home's energy efficiency, and a good score can be a powerful selling point.

At Moving Compared, we aim to simplify complex processes by explaining key elements (e.g. EPCs) to help you make informed decisions. We also connect you with trusted professionals, including surveyors, who can provide accurate information about your property's energy performance.

What is an EPC and why does it matter?

An EPC offers a snapshot of a property's energy efficiency and its environmental impact. It assigns a rating from A (most efficient) to G (least efficient) and is a legal requirement if you are selling, renting, or building a property in the UK.

For sellers, an EPC is more than just paperwork. It helps potential buyers understand what their energy bills might be, a significant concern in today's market. A better rating suggests lower running costs, which can make your home more appealing and potentially increase its value. It also demonstrates your property's compliance with current regulations and its readiness for a future where energy efficiency is increasingly prioritised.

How long is an EPC valid?

A common question for sellers is how often these certificates need to be renewed. An EPC is valid for 10 years from the date of issue, so you do not necessarily need to commission a new one when you sell your property, provided the existing certificate has not expired. However, if you have made significant energy-efficiency improvements, it is beneficial to obtain a new assessment to reflect the improved rating. You can easily check the status and expiry date of your current certificate on the gov.uk website.

Minimum EPC rating for selling properties in the UK

As of June 2026, there is no minimum EPC rating legally required to sell a property in England or Wales. However, this is a dynamic area of regulation, and sellers should be aware of potential future changes.

While no specific rating is needed for sales, rental properties in England and Wales generally require a minimum EPC rating of E. Proposals by the GOV.UK aim to raise this minimum to C by 2030 for all tenancies. Although these proposals haven't been enacted for sales, they signal a clear move toward greater energy efficiency. Improving your EPC rating now can future-proof your property and attract buyers who are conscious of energy costs and environmental impact.

Cost of an EPC certificate in the UK

The cost of an EPC certificate in the UK typically ranges from £60 to £120, varying by property size, location, and assessor. This fee covers the assessment and certificate issuance.

Several factors influence the final price, including property complexity (a large, multi-story home may cost more than a small flat) and regional differences. While necessary, it is an investment that provides valuable information for you and buyers. Moving Compared helps you find competitive quotes for surveyors who can complete EPC surveys.

What does an EPC survey involve?

An EPC survey is a visual inspection of your property's key energy-related features, carried out by an accredited energy assessor — much like a home survey report. The assessor visits your home to gather specific data on its construction, heating systems, and existing energy-efficiency measures.

During the visit, the assessor will typically:

• Inspect the property's size and layout: Measure rooms and note the number of habitable rooms.
• Examine the insulation: They will check the loft, wall (if visible or verifiable), and floor insulation.
• Assess windows and doors: Note the type of glazing (single, double, or triple) and frame materials.
• Review heating and hot water systems: This covers the boiler type, age, fuel source, controls, and hot water cylinder.
• Identify lighting types: They will check the proportion of low-energy lighting throughout the property.
• Note any renewable energy installations: Such as solar panels.

The assessor inputs this information into standardised software that calculates the property's energy efficiency rating and generates the EPC. The process usually takes 30 minutes to an hour, depending on your home's size and complexity.

EPC ratings explained and what do the different grades mean?

EPC ratings are presented on a colourful scale from A to G, similar to those found on household appliances. A represents the most energy-efficient homes, meaning they have the lowest running costs and environmental impact, while G signifies the least efficient.

The certificate also includes:

• Current and potential energy efficiency scores: These numerical scores correspond to the A-G bands.
• Estimated energy costs: An indication of how much it might cost to heat, light, and provide hot water for the property over three years.
• Recommendations for improvements: Tailored suggestions on how to improve the property's energy efficiency, along with potential cost savings and the resulting uplift in the EPC rating.
• Environmental impact: Measured in terms of carbon dioxide emissions.

Most homes in the UK currently fall into the D or E band. Achieving an A or B rating indicates a highly energy-efficient home, often featuring modern insulation, efficient heating, and possibly renewable energy sources. A G rating, conversely, points to a property with poor insulation, inefficient heating, and high energy consumption. Understanding these grades empowers both sellers to make improvements and buyers to make informed decisions about their potential new home.

How to improve the EPC rating before selling your home?

Improving your EPC rating can significantly boost your property's appeal and value. Many upgrades are straightforward and offer a good return on investment.

Here are four effective ways to enhance your score:

1) Upgrade your lighting: Replacing incandescent or halogen bulbs with LED lighting is one of the simplest and most cost-effective improvements. LEDs use much less electricity and last longer, making them an instant win for your EPC.

2) Boost your insulation: Effective insulation is key to retaining heat.

• Loft insulation: If your loft isn't insulated to at least 270mm, topping it up can dramatically reduce heat loss.
• Cavity wall insulation: If your home has cavity walls, filling them can prevent a significant amount of heat from escaping.
• Solid wall insulation: For older properties with solid walls, internal or external insulation can be very effective, though it's a more substantial project.
• Floor insulation: Insulating floors, especially those above unheated spaces, can also make a difference.

3) Enhance your heating system: It is a major factor in your EPC.

• Boiler upgrade: If your boiler is old and inefficient, replacing it with a modern, A-rated condensing boiler can lead to substantial improvements.
• Smart heating controls: Installing a smart thermostat and thermostatic radiator valves enables more precise heating control, reducing energy waste.
• Hot water cylinder insulation: Ensuring your hot water cylinder is well insulated helps prevent heat loss.

4) Improve windows and doors: Upgrading to double or triple glazing can significantly reduce heat loss. If full replacement isn't feasible, consider secondary glazing or heavy thermal curtains. Draught-proofing around windows and doors is a low-cost, high-impact measure. A solar hot water system can raise your EPC rating and attract environmentally conscious buyers. The Boiler Upgrade Scheme offers grants for air source heat pumps, which also improve your EPC. Check if you’re eligible with GOV.UK.

Pro tip: Focus on the "low-hanging fruit" first. LED lighting, draught-proofing, and topping up loft insulation are often the quickest and most cost-effective ways to improve your EPC rating.

Benefits of a higher EPC rating for sellers

A higher EPC rating offers several compelling benefits when you're looking to sell your home, making the investment in improvements truly worthwhile.

1. Firstly, it significantly increases your property's marketability. In an era of rising energy costs and environmental awareness, buyers are increasingly looking for homes that are efficient and cheaper to run. A good EPC rating acts as a clear signal that your property meets these demands, attracting a wider pool of potential buyers.
2. Secondly, a better EPC can lead to a higher sale price. Research by the Department for Energy Security and Net Zero has indicated that properties with higher EPC ratings can achieve higher values. Buyers are often willing to pay a premium for a home that promises lower utility bills and reduced carbon emissions over the long term.
3. Finally, an improved EPC rating can help a property sell faster. With energy efficiency being a key decision factor, properties that stand out for their strong ratings tend to spend less time on the market. This can smooth your moving process, especially when coordinating with conveyancing timelines. When buyers see a good EPC, it instils confidence, potentially leading to fewer queries during the conveyancing process and a more straightforward transaction.

Are there any financial considerations or pitfalls when improving your EPC?

While improving an EPC rating offers clear advantages, consider the financial implications and potential pitfalls. The main factor is the cost of improvements versus potential return on investment. Some upgrades, like loft insulation or LED lighting, are inexpensive and offer quick payback through energy savings and a better EPC. Others, such as solid wall insulation or renewable energy systems, can have high upfront costs.

Potential pitfalls:

• Over-investing: Avoid spending more on improvements than you are likely to recoup in the sale price. Research local market trends and consult local estate agents to understand what buyers in your area value most.
• Grant availability: While government grants and schemes (like the Boiler Upgrade Scheme) can reduce costs, they often have specific eligibility criteria, application processes, and may not cover the full expense. Check GOV.UK for current schemes and eligibility.
• Disruption: Major works can be disruptive and time-consuming, which may not suit a tight selling timeline.
• Quality of work: Poorly executed improvements can negate the benefits and even cause new problems. Always use certified and reputable tradespeople.
• Impact on property character: For older or listed buildings, certain energy-efficiency measures may be restricted or require special planning permission, and some may alter the property's aesthetic character.

Weigh the costs, benefits, and potential disruptions carefully. Prioritise cost-effective improvements that offer the best balance of EPC uplift and financial outlay for your property.

Final summary

Understanding and improving your home's EPC rating is a smart move for any seller in the UK property market. It is not just about compliance; it enhances your property's appeal, can increase its value, and shows commitment to lower running costs. From simple lighting changes to insulation upgrades, there are many ways to boost your score. Taking proactive steps ensures your property stands out, making your selling journey smoother and more successful.

Compare RICS-regulated surveyors to help with your home’s EPC assessment.

Sources:

https://www.gov.uk/find-energy-certificate

https://www.gov.uk/government/consultations/improving-the-energy-performance-of-privately-rented-homes-2025-update

https://www.ofgem.gov.uk/environmental-and-social-schemes/boiler-upgrade-scheme-bus

https://www.gov.uk/apply-boiler-upgrade-scheme/check-if-youre-eligible