Commercial EPCs

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A commercial Energy Performance Certificate (EPC) rates how energy efficient a commercial building is and must be made available to buyers or tenants whenever a building is bought or sold. Newly constructed commercial buildings are also required to have a non domestic EPC.

From April 2018 Minimum Energy Efficiency Standards will apply to new lettings and lease renewals. This will mean that it will be unlawful to agree a new lease for a commercial property with an Energy Performance Certificate (EPC) rating of F or G. An EPC rating of D is in the middle of the range and acceptable,while an EPC rating of A means that the building is highly efficient.

Frequently Asked Questions...

When do you need an EPC?

It is now mandatory that a commercial EPC is in place prior to marketing a commercial property. Newly constructed commercial buildings are also required to have an EPC.

Why do I need an Energy Performance Certificate?

It is an offence to construct, sell or lease a building without providing an Energy Performance Certificate to potential tenants, owner or occupiers.

What is an Energy Performance Certificate (EPC)?

Energy performance certificates were introduced by the government back in 2007 for both domestic and commercial property. Commercial Energy Performance Certificates (EPC) are energy surveys that determine the energy efficiency of a building or commercial premises. The building is rated on a scale of A – G based on the building's CO2 emissions per m2 of floor area. They are designed to give a reflection of the energy efficiency of a building, based on various factors like the insulation present, heating systems, glazing and renewable generation.

What factors affect an EPC rating?

A Commercial Energy Performance Certificates (EPC) is an 'asset' rating rather than an 'operational' rating. This means that the rating is not concerned with the actual energy usage of the building occupier. The rating is derived from an assessment of the building fabric (walls, floors, roof, windows and doors), HVAC (heating, ventilation and air conditioning), lighting and on-site renewable energy.

Why were commercial EPCs introduced?

EPCs were introduced by the European Union initiative (Directive 2002/91/EC – EPBD) to help drive energy efficiency across all the member states.

How long is an Energy Performance Certificate valid?

Energy Performance Certificates are valid for 10 years.

When is a commercial EPC not required?

Certain buildings are exempt from needing an EPC. These include:

  • Buildings primarily used as places of worship.
  • Temporary constructed buildings which have a lifespan of less than 2 years.
  • Industrial and agricultural sites that have a low heating demand.
  • Standalone buildings which have a floor area less than 50m2.
  • Protected buildings that have a designated environmental or historical merit.

Who can undertake a commercial EPC?

An EPC needs to be undertaken by a qualified assessor. All qualified assessors can be found on the Non-Domestic Energy Performance Register managed by Landmark.

What does an EPC involve?

The assessor must conduct a site visit so that the building dimensions can be measured and any available information relating to the building fabric, lighting and HVAC can be assembled. This information is used to model the building using the Simplified Building Energy Model (SBEM) software and produce the EPC.

The software produces an Energy Performance Certificate and a Recommendation Report. The EPC gives the building a rating on a scale of A – G based on the building's CO2 emissions per m2 of floor area. The recommendation report contains different recommendations for improvement sub-divided into short-term, medium-term and long-term payback measures. Once the EPC is complete a copy is lodged on Landmark and copies of the EPC and RR are sent directly to the client.


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