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Commercial Energy Assessor

Commercial Energy Assessor

Surrey Energy Ratings Ltd provide energy assessments resulting in domestic and commercial EPCs as well as comprehensive air conditioning inspections and TM44 reporting. We are a commercial energy assessor. Our teams of accredited surveyors and assessors carry out commercial EPC surveys and air conditioning inspections throughout the South East, delivering fast, efficient and professional results to clients large and small.

A commercial building requires an Energy Performance Certificate (EPC) when it is sold or rented. Once completed, the certificate is valid for ten years no matter if the building is sold or rented to another occupier. The energy assessment consists of examining the method of the building construction, such as cavity wall, solid brick, curtain wall etc. The level of insulation in the building, within the roof space for instance. The type of windows, lighting and, of course, the method of heating / cooling plus their relevant controls and also the method of hot water supply. As part of the method of producing an EPC for a commercial building, the property is divided into 'zones', whereby each zone would have a different activity within the building or it might have different lighting or heating to adjacent areas.

In order to produce a commercial energy certificate, the floor, ceiling/roof and walls of each zone, called 'envelopes', have to be entered individually into the software. Then each zone is linked to the relevant heating / cooling system and type of lighting. The resultant energy efficiency recommendations for the building are then tailored based on their relevance before finalising the certificate and recommendation report. This in depth data entry requirement is one reason why commercial energy certificates carry a higher price tag than domestic ones.


As legislation tightens on carbon footprints and energy-efficiency, the need for responsible energy consumption is becoming increasingly important. In order to comply with the latest EU directives, we carry out air conditioning inspections in line with CIBSE TM44 to businesses, building owners, landlords and tenants. There are many benefits to air conditioning inspections aside from compliance, often highlighting quick and easy ways to adjust energy consumption or reduce waste, and many of our clients find they quickly recoup the cost of their TM44 within a matter of weeks. TM44s remain valid for five years, after which they will need to be renewed.

At Surrey Energy Ratings Ltd we realise that energy efficiency begins with a core understanding of the building itself together with its energy needs versus actual energy consumption. To this end we undertake domestic and commercial EPCs that can help to identify the main uses of energy with a view to modifying energy consumption.

We provide both domestic and commercial EPCs across the South East of England - with each one designed to reveal the energy rating of a particular building. With a need for substantial reductions in carbon emission, Britain’s construction industry is making moves to reduce energy use in modern buildings, but our current structures can often be improved through smart solutions and improved insulation. Commercial EPCs effectively ‘grade’ a building with an energy rating - from Grade A at its most efficient, to Grade G where significant improvement can be made. 

Surrey Energy Ratings Ltd provides affordable solutions across a wide range of commercial EPCs, TM44 air conditioning inspections and Display Energy Certificates (DECs). Find out how we can help you to meet the current legislation and make substantial savings on your energy bills - contact us today for a free quotation.


Elmhurst Approved Energy Assessor1
Sterling Accreditation
Institute of Domestic Energy Assessors
Chase Inventory Services