Commercial EPC Frequently Asked Questions


Some of the information provided below applies to Domestic EPCs.


What is an Energy Performance Certificate (EPC)?


An Energy Performance Certificate rates a building in terms of its capability to use energy efficiently. The building is rated on a scale of A – G rather like white electrical goods. The rating is produced based on the building's CO2 emissions per m2 of floor area and provides details of where the building's energy is being used, i.e., Heating, Lighting and Cooling etc..


Why do I need an Energy Performance Certificate?


The European Performance of Buildings Directive requires all member states to certify a building's energy status in order provide occupants and building users with this information. In England and Wales it is an offence to construct, sell or lease a building without providing an Energy Performance Certificate to potential Tenants, Owner or Occupiers.


When will I need an Energy Performance Certificate?


Currently you are required by law to commission an Energy Performance Certificate within 7 days of marketing the building.


How often will I need an Energy Performance Certificate?


Energy Performance Certificates are valid for 10 years, regardless of whether the building is resold, released or re-let within this time period.


How much will an Energy Performance Certificate cost?


The cost of the Energy Performance Certificate will depend on building size and complexity. Building complexity can be related to the shape of the building and/or the number of rooms. Please see the EPC prices on the Home page.


How can I reduce the amount of time the assessor needs to produce the EPC?


Building owners can provide information about the building such as: location and type of heating, cooling and ventilation systems, installed solar panels or other low carbon technologies, drawings, specifications, building services maintenence logbook, etc  which will greatly aid the assessor’s understanding of energy usage.


How long does the EPC process take?


Producing an EPC is a two stage process. The first is visit the building to collect energy related information and the second is production of the EPC. A Commercial building visit can take anywhere between 1 and 3 hours to complete depending on the size of the premises. Very small premises can take slightly less than 1 hour to complete. The second stage, producing the EPC will vary according to building complexity but should be available about 24 hours of the visit.