A commercial Energy Performance Certificate (EPC) rates the energy efficiency of non-domestic buildings from A (most efficient) to G (least efficient). It is legally required when a property is built, sold, or let, and can affect lettable, running costs, and asset value.
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A commercial Energy Performance Certificate (EPC) is a legally required document that rates the energy efficiency of non-domestic buildings on a standardised scale from A (most efficient) to G (least efficient). The rating is based on an assessment of the building’s construction, heating, cooling, lighting, ventilation, and use of renewable technologies.
It provides a clear summary of how efficiently a building is expected to use energy and includes practical recommendations for improvement. Although it does not measure actual energy consumption, it reflects the building’s performance under standardised conditions. This makes it easier for owners, occupiers, and investors to compare properties, understand potential running costs, and identify opportunities to improve efficiency and overall building performance.
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An Electrical Safety Certificate confirms that all electrical systems and installations have been inspected by a qualified electrician and meet required safety standards.
A Gas Safety Certificate (CP12) confirms that all gas appliances in a rental property have been checked by a qualified engineer and meet legal safety standards.
A Fire Safety Certificate confirms that all fire safety measures in a property have been assessed and comply with legal safety regulations.
Your certificate will be emailed to you and available on your online account.
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Although commercial EPCs are now a familiar part of the property landscape, they are not required for every non-domestic building or in every circumstance.
Minimum energy efficiency standards (MEES) have shifted commercial EPCs from a passive requirement into an active compliance obligation for landlords and investors. Instead of simply obtaining an EPC, building owners must now guarantee their properties meet a specified minimum rating before granting a new lease or, in many cases, continuing an existing one.
For commercial properties, MEES effectively links legal lettable and asset value to energy performance. Sub‑standard buildings may face restrictions on leasing, heightened void risk, and reduced marketability. Lenders and buyers increasingly view poor ratings as indicators of future capital expenditure.
MEES also influences lease negotiations. Parties must decide who funds upgrades, how improvement works are scheduled, and how disruption is managed. Exemptions exist, but they are tightly defined and must be properly registered.
Commercial EPC ratings are based on a structured calculation that models how efficiently a building uses energy under standardised conditions. An accredited assessor gathers detailed data and inputs it into approved software using a national methodology, producing a final score that is converted into an A–G rating.
insulation levels, wall and roof construction, glazing type, air permeability, and thermal bridging affecting heat loss or gain
heating, cooling, ventilation, hot water, and fixed lighting systems, including efficiencies, controls, and fuel types
assumed occupancy, temperature set-points, operating hours, and equipment loads based on building use
how much energy the building is expected to use under standard conditions
conversion of energy demand into overall primary energy consumption
associated CO₂ output calculated from the building’s expected energy use
Many commercial properties with poor EPC ratings can be improved through targeted, cost-effective upgrades rather than full refurbishment. Owners usually start by reviewing the EPC recommendations, which highlight measures based on impact and payback.
Key Improvement Measures:
Careful selection of a qualified commercial EPC assessor can determine not only the accuracy of a building’s rating but also the value that owners and occupiers gain from the process.
Selecting a competent assessor ensures they are accredited, insured, and experienced with your specific property requirements.
Verifying official registers, reviewing past work, and clarifying all fees helps you compare different service providers objectively and fairly.
Open communication ensures technical findings are explained, timelines are met, and all specific client concerns are addressed promptly.
EPC data informs maintenance and energy upgrades while strengthening your property marketing, rental decisions, and final price negotiations.
A commercial EPC assessment visit follows a structured, evidence-based process focused on how a building is constructed, serviced, and used. The assessor begins by confirming access and explaining the process, then gathers detailed data through inspections and measurements to input into EPC software.
What Happens During the Visit:
A section that provides quick answers to common queries.
Yes, but only if the units share common services, access and are not designed or modified to be used separately; otherwise, each self‑contained unit generally requires its own EPC reflecting its distinct energy performance.
A commercial EPC can influence insurance premiums and lending terms, as insurers and lenders may assess energy efficiency, operating costs, and compliance risk. Poor ratings might trigger higher costs, additional conditions, or required improvements before cover or finance is approved.
Yes, exemptions often apply to listed or historically significant buildings, especially where efficiency upgrades would harm their character. However, owners may still need assessments and must show that recommended measures are either technically unsuitable or would unacceptably alter heritage features.
If they ignore EPC requirements, they risk enforcement notices, financial penalties, and potential restrictions on legally marketing or granting a lease. Fines often scale with rateable value, plus publication of non‑compliance details, damaging reputation and negotiations.
They usually change every few years, often aligned with national energy or climate policy updates. Methodologies may shift with new technologies, revised building standards, or tightening efficiency targets, so landlords should regularly monitor government guidance and professional updates.