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Energy Performance Certificate

Click on image below for sample of Domestic EPC

Energy Performance Certificates (EPCs) are needed whenever a property is: Built, Sold or Rented

In 2007 it became law in the UK for Home Sellers and Landlords to obtain an EPC for potential buyers and tenants before the marketing of their property to sell or rent.


An EPC contains:

  • information about a property’s energy use and typical energy costs

  • recommendations about how to reduce energy use and save money


An EPC gives a property an energy efficiency rating from A (most efficient) to G (least efficient) and is valid for 10 years.


Buildings that don’t need an EPC

These include:

  • places of worship

  • temporary buildings that will be used for less than 2 years

  • stand-alone buildings with total useful floor space of less than 50 square metres

  • industrial sites, workshops and non-residential agricultural buildings that don’t use a lot of energy

  • some buildings that are due to be demolished

  • holiday accommodation that’s rented out for less than 4 months a year or is let under a licence to occupy

  • listed buildings - you should get advice from your local authority conservation officer if the work would alter the building’s character

  • residential buildings intended to be used less than 4 months a year



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The Survey

The energy survey needed to produce an EPC is performed by an assessor who visits the property, examines key items such as loft insulation, heating system & controls, hot water tank, radiators, windows for double glazing, and so on. He or she then inputs their findings into the RdSAP software program which performs the calculation of energy efficiency. The program gives a single number for the rating of energy efficiency, and a recommended value of the potential for improvement. There are similar figures for environmental impact. A table of estimated energy bills per annum (and the potential for improvement) is also presented, but without any reference to householder bills. The householder will have to pay for the survey. The exercise is entirely non-invasive, so assessors make assumptions on the insulation properties of various elements of the property based on age and construction type. The assessor has the ability to over-ride these assumptions if visual, written OR photgraphic evidence is provided to support the presence of insulation which may have been subsequently installed.

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