Understanding What Is an EPC (Energy Performance Certificate)

An Energy Performance Certificate (EPC) is a crucial document that provides a detailed assessment of a property's energy efficiency. It rates the property on a scale from A (most efficient) to G (least efficient) and includes information on energy use, typical energy costs, and carbon dioxide emissions. Whether you're a homeowner, buyer, or seller, understanding what an EPC is and how it impacts your property is essential.

Key Takeaways

  • An EPC rates a property's energy efficiency on a scale from A to G, with A being the most efficient.

  • The certificate provides detailed information on a property's energy use, typical costs, and carbon dioxide emissions.

  • EPCs are legally required for selling or renting out a property in the UK.

  • Recommendations for improving energy efficiency are included in the EPC.

  • Having a good EPC rating can increase property value and marketability.

What is an EPC (Energy Performance Certificate)?

An EPC, or Energy Performance Certificate, is a detailed document that evaluates the energy efficiency of a property. Issued after an assessment by a qualified assessor, the EPC rates a property on a scale from A (most efficient) to G (least efficient). This rating provides a quantitative measure of how energy-efficient the property is in terms of its construction, heating methods, and insulation. It includes specific information about the property's energy use, typical energy costs, and carbon dioxide emissions.

Definition and Purpose

An EPC is a standardized document prepared by an energy assessor that measures the energy efficiency of a building. Alongside an overall rating, it will show the household’s estimated energy costs for lighting, heating, and hot water for the next three years. The primary purpose of an EPC is to provide potential buyers and tenants with an indication of the energy efficiency of a property.

Legal Requirements

An Energy Performance Certificate (EPC) is a legally valid document which provides an energy efficiency rating (displayed on an A-G scale) in relation to a property’s running costs. This rating will take into account the potential energy performance of the property itself (the fabric) and its services (heating, lighting, hot water etc).

Who Can Issue an EPC?

An EPC is issued after an assessment by a qualified assessor. These assessors are trained professionals who evaluate various aspects of the property, including its construction, heating methods, and insulation. The assessment results in a detailed document that provides a comprehensive overview of the property's energy efficiency.

Components of an EPC

Energy Efficiency Rating

An EPC provides a quantitative measure of a property's energy efficiency, rating it on a scale from A (most efficient) to G (least efficient). This rating helps prospective buyers or tenants understand the energy performance of the property. The rating is determined by assessing the energy efficiency of a property, including its construction, heating methods, and insulation.

Estimated Energy Costs

The EPC includes an estimate of the property's current energy costs, broken down into lighting, heating, and hot water. This section is incredibly useful for prospective buyers to know how much a property's utility bills might be and how much they could save by introducing some energy-saving measures.

Recommendations for Improvement

The EPC also provides recommendations for improving the property's energy efficiency. These suggestions can range from simple measures like installing energy-efficient lighting to more significant upgrades like improving insulation or replacing an old boiler. Implementing these recommendations can lead to lower energy costs and a better energy efficiency rating.

Assessing the energy efficiency of a property is a core component of an EPC check. The assessor examines key elements that contribute to the property's energy performance, providing valuable insights for improvement.

How to Obtain an EPC

Finding a Qualified Assessor

To get a new EPC for your property, you will need to find an accredited energy assessor. In England, Wales, and Northern Ireland, an accredited energy assessor must complete your EPC. You can find accredited assessors in your area via the government’s official EPC Register, or you can book it with us at London EPC | Energy Performance Certificate in London (energyperformancesolutions.co.uk).

The Assessment Process

The assessment process involves a thorough evaluation of your property by the energy assessor. They will assess various aspects of your home, including insulation, heating systems, and windows. The assessment takes approximately 30min depending on the size and complexity of the property. After the assessment, the assessor will produce the certificate and answer any questions you have.

Cost of Getting an EPC

The cost of getting an EPC can vary depending on the size and type of the property. However, getting an EPC is simple and can be relatively cheap. Here's a general idea of the costs involved:

Property Type

Estimated Cost

1-bedroom flat


2-3 bedroom house


Larger properties


Getting an EPC is a straightforward process that ensures your property meets legal requirements and helps improve its energy efficiency.

Importance of an EPC

Impact on Property Value

A good EPC rating can significantly impact the value of a property. Properties with better energy ratings can often command higher prices and are more attractive in the market. This certificate is crucial as it indicates potential energy costs and environmental impacts, making it a vital tool in property transactions and rental markets. Estate agents Knight Frank issued an excellent article highlighting how properties that have an EPC rating of C or above increase in value. Please see: Improving your EPC rating could increase your home’s value by up to 20% (knightfrank.com)

Environmental Benefits

EPCs are vital in promoting energy efficiency. They assess the energy performance of a property and provide recommendations for improvement. By following these recommendations, homeowners can reduce their carbon footprint and contribute to environmental sustainability.

Legal Implications

An EPC is a mandatory requirement when putting a property up for sale or available to rent in the UK. Potential buyers and tenants must have access to the EPC rating, allowing them to make informed decisions about the property's energy efficiency and potential running costs. This legal requirement ensures transparency and promotes energy-efficient practices in the housing market.

A good EPC could mean big savings on energy bills. It can also give guidance on making improvements to your home to help improve its overall energy efficiency.

Improving Your EPC Rating

Energy-Saving Measures

Improving your home’s EPC rating can involve various upgrades such as enhancing insulation, upgrading the heating system, and installing double-glazing windows. These measures not only improve your rating but also reduce your energy bills. Improving your home's EPC rating is one of the best ways to reduce your energy bills.

Government Grants and Incentives

There are several government grants and incentives available to help you improve your EPC rating. These can significantly offset the costs of making energy-efficient upgrades. It's worth exploring these options to make the most of available financial support.

Long-term Benefits

A good EPC rating can make your property more attractive to buyers and renters, potentially increasing its value. Additionally, energy-efficient homes are generally more attractive to potential buyers and tenants who are looking to save money on their energy bills. A high EPC rating may lead to more favourable terms and lower interest rates, as it signifies lower ongoing costs for the homeowner.

A high EPC rating can make your property more attractive to eco-conscious buyers as well as those looking to keep their utility bills lower.

Common Misconceptions About EPCs

EPCs Are Only for Selling Property

One common misconception is that EPCs are only necessary when selling a property. In reality, EPCs are also required when renting out a property. This requirement ensures that tenants are informed about the energy efficiency of their potential new home, promoting transparency and encouraging energy-saving measures.

EPC Ratings Never Change

Another misconception is that once an EPC rating is given, it remains the same forever. However, EPC ratings can change if improvements are made to the property. For instance, installing better insulation or upgrading to energy-efficient windows can significantly improve the rating. This highlights the importance of regularly updating your EPC, especially if you've made energy-saving improvements.

High Costs of Improvement

Many people believe that improving their EPC rating will be prohibitively expensive. While some upgrades can be costly, there are also many affordable measures that can make a significant difference. For example, switching to energy-efficient light bulbs or installing a smart thermostat can improve your rating without breaking the bank. Additionally, there are government grants and incentives available to help cover the costs of more substantial improvements.


Understanding Energy Performance Certificates (EPCs) is essential for homeowners, buyers, and renters alike. These certificates provide a comprehensive overview of a property's energy efficiency, offering valuable insights into potential energy costs and environmental impact. By highlighting areas for improvement, EPCs empower property owners to make informed decisions that can lead to cost savings and a reduced carbon footprint. Whether you're looking to buy, sell, or simply improve your home's energy efficiency, an EPC is a crucial tool in promoting sustainable living and financial prudence.

Frequently Asked Questions

What does EPC stand for?

EPC stands for Energy Performance Certificate. It is a document that assesses the energy efficiency of a property.

Who can issue an EPC?

An EPC can only be issued by a qualified and accredited domestic energy assessor after conducting an assessment of the property.

How long is an EPC valid for?

An EPC is valid for 10 years from the date of issue.

Is an EPC required for selling or renting a property?

Yes, an EPC is a legal requirement when selling or renting out a property in the UK.

What information does an EPC provide?

An EPC provides information on the energy efficiency rating of a property, estimated energy costs, carbon dioxide emissions, and recommendations for improvement.

Can an EPC rating be improved?

Yes, the EPC rating can be improved by implementing energy-saving measures and following the recommendations provided in the certificate.

For any questions about EPCs or if you would like to book one, please see our contact details below.

Kind Regards

Daniel Pina

Director & Energy Assessor | Energy Performance Solutions LTD

Address: 128 City Road, London, EC1V 2NX

Email: info@energyperformancesolutions.co.uk

Web: www.energyperformancesolutions.co.uk
Phone: 02071013460