The Complete Guide to Commercial EPCs in 2026: Ratings, MEES Deadlines and How to Improve Your Score

April 8, 2026

Energy Performance Certificates (EPCs) evaluate the energy efficiency of commercial and residential buildings in the United Kingdom, and with the MEES 2028 deadline approaching, understanding your building's EPC rating has never been more commercially important. Unlike rating systems created by private companies like LEED, NABERS, and BREEAM, commercial EPC ratings were introduced by the UK government in 2008.

Commercial EPCs function similarly to the energy labels on new appliances, offering a clear and color-coded snapshot of a building's energy efficiency. They rate a building's energy performance on a scale from A, signifying high efficiency, to G, indicating low efficiency.

Much like a guide, they provide insights into the potential costs of heating and lighting a property, along with its expected carbon dioxide emissions.

The UK Government estimates that the proportion of rented commercial property covered by commercial EPC requirements will increase from around 10% to around 85% in 2030 (approximately 1,000,000 buildings across England and Wales).

Jump To:

Commercial EPC vs Residential EPC

When is a Commercial EPC Required?

How is an EPC for Commercial Property Calculated?

An Example EPC Score for Commercial Property

EPC Requirements Commercial Property

Obtaining a Commercial Energy Performance Certificate (EPC)

How much does a Commercial EPC Cost?

EPC Exemptions for Commercial Properties

Top Ways to Improve EPC Ratings in Commercial Properties

Maximising Your EPC Score with CIM's Building Analytics Platform

Changes to EPC Regulations

Frequently Asked Questions about Commercial EPC's

Commercial EPC vs Residential EPC

While both residential and commercial EPCs follow a similar grading system, commercial EPCs are tailored specifically for business premises. These include office buildings, retail spaces, and other commercial properties. Unlike residential EPCs, which might suggest small-scale improvements like changing light bulbs, commercial EPCs often involve more extensive recommendations, suitable for larger-scale operations.

When is a Commercial EPC Required?

As a result of the Minimum Energy Efficiency Standards (MEES) directive coming into place, all commercial properties let or sold in England or Wales, are required to have an EPC score. The UK government specifies that all commercial properties must have an EPC if:

You rent or sell the property
A new building has been finished
Changes have been enacted in building use that affect heating, air conditioning, or mechanical ventilation systems.

How is an EPC for Commercial Property Calculated?

The Energy Performance Certificate (EPC) rating for a commercial property is derived from a comprehensive assessment that scrutinizes the building's energy efficiency. Here's an insight into the calculation process:

Initial Assessment

A certified assessor begins with a meticulous inspection of the commercial property. This initial phase involves analyzing the building's dimensions, design, construction techniques, and chronological age—all foundational factors that influence energy efficiency.

Evaluation of Key Components

The assessor then delves into the core systems within the building:

Heating System: The efficiency, type, and control of the building's heating systems are evaluated for their energy consumption patterns.
Cooling Systems: Any cooling apparatus, such as air conditioning units, are reviewed for their efficiency ratings and operational mechanisms.
Ventilation: The building's ventilation strategies are examined to understand their role in maintaining energy efficiency.
Lighting: The types of lighting, with a focus on those in communal areas, are assessed to gauge their energy efficiency levels.

Insulation Analysis

Next, the assessor conducts a thorough check of the property's insulation:

Wall Insulation: The materials, thickness, and installation of wall insulation are scrutinized.
Roof Insulation: Insulation presence and quality in roof or attic areas are evaluated.
Window Type: The types of windows, such as double-glazing, are considered for their thermal retention capabilities.

Energy Consumption and Emissions

The assessor then examines the building's operational aspects:

Actual Energy Use: Available data on the building's energy consumption is collected to understand usage patterns.
Carbon Dioxide Emissions: The CO2 emissions are estimated, reflecting the building's environmental impact.
Renewable Energy Integration: If applicable, the use and efficiency of renewable energy systems are assessed.

Software-Powered Analysis

Finally, the assessor compiles all the data into advanced analytical software. This program calculates the property's energy efficiency by juxtaposing its features with established benchmarks, resulting in the EPC rating.

The EPC rating, thus, encapsulates the physical attributes of the building and the operational habits of its occupants, recognizing that actual energy usage significantly sways the final score.

An Example EPC Score for Commercial Property

In the following screenshot, we can observe an example of an EPC rating for one of London’s most iconic commercial properties, The Shard.

This overview is digitally posted on the UK Government’s, Find an EPC rating website.

You can see the address, including the total amount of floors covered by the certificate, the energy rating, and the expiry date. Additional, high-level categorical information is available below with both the property type and total floor area noted.

Next, we can see the property’s current rating within the grading scale.

After that, the property is shown in comparison to similar properties:

Then, you can see a breakdown of this property’s energy performance complete with the primary fuel source, cooling capabilities, building emissions rates, and energy usage rates.

Finally, the report finishes with a recommendations report, the contact details of the assessor, and the accreditation scheme.

EPC Requirements for Commercial Property

Commercial EPC requirements are set by the UK government's Minimum Energy Efficiency Standards (MEES) — the regulatory framework that determines the minimum EPC rating a property must hold to be lawfully let. MEES has fundamentally reshaped energy performance expectations in commercial real estate, and the standards are about to tighten significantly.

Where Things Stand in 2026

Since April 2023, all privately rented non-domestic properties in England and Wales must hold an EPC rating of E or above. Leasing a property rated F or G is prohibited for both new and existing tenancies. An estimated 8% of London commercial stock was affected when these rules took effect.

But the E minimum is the floor, not the destination. Two further compliance deadlines are approaching:

1 April 2028 — EPC C minimum. All privately rented non-domestic properties will need a rating of C or above to be lawfully let. Properties rated D or below will be unlettable unless a valid exemption is registered.
1 April 2030 — EPC B minimum. Only properties rated B or above will be compliant — a standard that over 87% of office stock in major UK markets currently fails to meet, according to Savills. Over 50% of inner London commercial stock would be unlettable at this threshold.

Regulatory Uncertainty and Why It Doesn't Change the Calculus

The government's formal response to its 2021 MEES consultation has still not been published. The Climate Change Committee's December 2024 progress report indicated a response was expected in early 2025, but this has not materialised. The EPC C (2028) and EPC B (2030) targets are widely expected to be confirmed, though they remain subject to change pending the official response.

Even without final confirmation, the direction of travel is clear. Retrofit projects for commercial buildings — particularly older offices — routinely take 12–18 months from assessment to completion. Landlords who delay until regulations are formally enacted risk being unable to let non-compliant space when the deadlines arrive.

The EPC Itself Is Changing

In parallel, the government's December 2024 consultation on reforming the Energy Performance of Buildings regime proposed replacing the single A–G rating with multiple performance indicators covering fabric performance, heating system efficiency, smart readiness, and energy cost. New metrics are expected in the second half of 2026 — meaning the certificate your building holds today may look very different within the next 12 months.

Obtaining a Commercial Energy Performance Certificate (EPC)

To acquire a Commercial Energy Performance Certificate (EPC) for your business premises, follow these steps:

Locate a Commercial Energy Assessor: Find an assessor specialized in commercial properties. You can search online via the UK government's commercial accessory registry, or consult directories from accreditation schemes specializing in commercial energy assessments.

Arrange the Assessment: Contact the chosen assessor and schedule a time for them to evaluate your commercial property. Be prepared to provide access to all areas of the building and relevant documentation, such as building plans or previous energy reports.

Undergo the Inspection: The assessor will inspect various features of your property, including heating and cooling systems, insulation, windows, and lighting, specifically focusing on aspects relevant to commercial buildings.

Review the Report: After the inspection, the assessor will produce a detailed report that includes your property's EPC rating and suggestions for enhancing energy efficiency tailored to commercial premises.

Receive Your EPC: The final EPC, valid for 10 years, will be provided to you. This should be made available to any prospective buyer or tenant when selling or leasing the property.

Display Requirements: If your commercial building has a total useful floor area of over 500 square meters and is frequently visited by the public, you're required to display the EPC prominently.

Selecting a qualified and experienced commercial energy assessor is crucial for obtaining an accurate and effective EPC for your commercial property.

How Much Does a Commercial EPC Cost?

Costs vary depending on property size, complexity, and location. As a guide for 2026:

Small commercial properties (retail units, cafés, small offices up to ~150 m²): £145–£300
Medium-sized buildings (larger offices, multi-room retail up to ~500 m²): £300–£500
Large or complex buildings (warehouses, multi-floor offices, factories 500 m²+): £500–£1,500+

Key factors influencing price include the number and type of heating/cooling systems, the age and complexity of the building fabric, and whether the assessor needs to inspect multiple floors or zones. Prices in London and the South East tend to sit at the upper end of these ranges.

Source: Fast EPC commercial pricing data (2026); Inteb commercial EPC guide (2026).

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EPC Exemptions for Commercial Properties

Under the Minimum Energy Efficiency Standards (MEES), there are specific circumstances where a commercial property can be exempt from meeting the required Energy Performance Certificate (EPC) ratings. Understanding these exemptions is crucial for landlords to navigate their legal responsibilities effectively. Here's a detailed look at the various EPC exemptions:

1. Devaluation Exemption

Criteria: If improvements necessary to meet the minimum EPC rating would decrease the market value of the property by more than 5%, an exemption can be claimed.

Evidence Required: A report from an independent surveyor is needed to support this claim.

2. All Improvements Made

Criteria: If all possible energy efficiency improvements have been made and the property still doesn't meet the minimum EPC rating, an exemption can be registered.

Evidence Required: Documentation proving that all relevant improvements have been undertaken is necessary.

3. Consent Exemptions

Criteria: If consent from tenants, mortgagees, or other parties is required for energy efficiency improvements and such consent is denied, or is given with unreasonable conditions.

Evidence Required: Written evidence of the refusal or the unreasonable conditions attached to the consent must be provided.

4. Seven-Year Payback Test

Criteria: If the expected payback period for energy efficiency improvements is more than seven years, this can be grounds for exemption.

Evidence Required: Detailed financial calculations demonstrating that the payback period exceeds seven years.

5. Temporary Exemption for New Landlords

Criteria: New landlords can claim a temporary exemption for a period of six months under certain circumstances.

Evidence Required: Proof of the date when they became the landlord and the qualifying conditions for the exemption.

6. Listed Buildings and Certain Protected Properties

Criteria: Listed buildings or properties in conservation areas might be exempt if compliance with minimum energy efficiency requirements would unacceptably alter their character or appearance.

Evidence Required: Documentation confirming the building's listed status or location in a conservation area, along with an expert assessment of the impact of compliance.

Registering an Exemption

Exemptions must be registered in the national PRS Exemptions Register. They are typically valid for five years and are not transferable to new landlords.

It's important to note that these exemptions are not automatically granted and must be carefully substantiated with appropriate evidence. Landlords should carefully evaluate their situation and, if considering an exemption, ensure that they fully understand the criteria and evidence requirements. Misinterpreting these exemptions can lead to non-compliance, resulting in penalties.

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Top ways to improve EPC ratings in commercial properties

Improving the Energy Performance Certificate (EPC) rating of a commercial property is crucial for reducing energy consumption, lowering operational costs, and enhancing the building's overall value. Here's a listicle on the top ways to enhance EPC ratings, with a special focus on the value of an Energy Management System (EMS) like CIM, especially for buildings over 10,000 square meters.

1. Install LED Lighting

Impact: LED lights consume up to 90% less energy than traditional bulbs and last up to 25 times longer.

Benefit: Significant reduction in energy costs and less frequent need for replacements.

2. Upgrade Heating and Cooling Systems

Impact: Modern, high-efficiency boilers or air conditioning units drastically cut down energy usage.

Benefit: Enhanced energy efficiency and reduced operational expenses.

3. Insulate the Building

Impact: Proper insulation in walls, floors, roofs, and windows minimizes heat loss.

Benefit: Improved comfort levels for occupants and lower heating costs.

4. Utilize Renewable Energy Sources

Impact: Solar panels or wind turbines provide clean, sustainable energy.

Benefit: Reduced dependence on grid electricity and potential energy cost savings.

5. Improve Ventilation

Impact: Effective ventilation lowers humidity,odorss, and pollutants, enhancing indoor air quality.

Benefit: A healthier environment for occupants and potential energy savings from more efficient heating and cooling.

6. Invest in a Building Analytics Solution

Impact: Comprehensive energy control, real-time monitoring, data-driven insights, and automated optimization of your building management system.

Benefit: Substantial cost savings and environmental sustainability.

Practical Steps to Improve Your EPC Rating Using Analytics

The general improvement measures listed above, LED upgrades, insulation, system replacements, are well established. The harder question is where to start and how to quantify the impact before committing capital. This is where building analytics earns its value.

‍Step 1: Baseline your building's actual energy performance. Connect your BMS data to an analytics platform to establish real consumption patterns across heating, cooling, lighting, and ventilation. Identify the gap between current performance and the EPC C (2028) or EPC B (2030) thresholds.‍
Step 2: Identify the highest-impact interventions. Analytics can pinpoint which systems are driving the most waste. Common findings include:
- Heating and cooling running simultaneously in overlapping zones
- HVAC systems operating outside occupied hours (often 30–40% of total runtime in poorly optimised buildings)
- Lighting circuits running at full output in daylight-rich zones
- Setpoint drift where actual temperatures deviate significantly from programmed targets‍
Step 3: Implement low-cost optimisation first. Many buildings can shift from an EPC D to a C, or from a C to a B, through operational changes alone, without major capital expenditure. Schedule tightening, setpoint correction, and sequence-of-operations tuning typically deliver measurable improvements within weeks.‍
Step 4: Build the evidence pack for your next EPC assessment. Compile the operational data, consumption profiles, system schedules, controls documentation, into a format your EPC assessor can use. This reduces reliance on default assumptions and ensures your rating reflects the building's actual performance, not a conservative estimate.‍
Step 5: Monitor and maintain. An EPC is valid for 10 years (potentially less under proposed reforms), but building performance can degrade within months if controls drift or occupancy patterns change. Continuous monitoring ensures the gains that earned your improved rating are sustained.

Preparing for MEES 2028? See how CIM's building analytics platform helps commercial landlords identify efficiency gains and build the evidence pack for a stronger EPC rating. Watch a demo →

Recent changes to EPC Regulations

In December 2024, the UK Government initiated a public consultation to reform the Energy Performance of Buildings (EPB) regime in England and Wales.

This consultation, running from 4 December 2024 to 26 February 2025, seeks to enhance the accuracy and applicability of Energy Performance Certificates (EPCs) and related assessments.

Key proposed changes:

Introduction of New Metrics:
- The current single-metric system, primarily the Energy Efficiency Rating (EER), is considered insufficient. The proposal suggests incorporating multiple metrics to provide a more comprehensive view of a building's energy performance. For domestic properties, the proposed headline metrics include:
  - Fabric Performance: Evaluates the thermal efficiency of the building's envelope.
  - Heating System: Assesses the efficiency and environmental impact of the heating source.
  - Smart Readiness: Gauges the potential for integrating smart technologies to optimize energy consumption.
  - Energy Cost: Provides insights into the financial implications of the building's energy efficiency.
- Additional metrics, such as carbon emissions and overall energy use, may serve as supplementary information.
Validity Period of EPCs:
- The current validity period of 10 years for EPCs is under review. The consultation proposes reducing this period to between two and seven years to ensure that EPCs reflect more up-to-date information about a property's energy performance.
Trigger Points for EPC Requirements:
- Currently, an EPC is required when a property is sold, let, or marketed. The proposed changes suggest expanding these trigger points to include the expiration of an EPC, meaning that properties would need to have a valid EPC throughout the duration of a tenancy, not just at the point of sale or lease.
Quality Assurance and Data Management:
- The consultation emphasizes improving the quality and reliability of EPCs by enhancing data management protocols and strengthening quality control measures. This includes better accessibility to building performance data and ensuring that energy assessors adhere to rigorous standards.
Revisions to Air Conditioning Inspection Reports (ACIRs):
- Proposed updates aim to improve the quality and usefulness of ACIRs, ensuring they provide actionable insights into the efficiency of air conditioning systems and recommendations for improvement.

These proposed reforms are part of the government's broader strategy to achieve net-zero emissions by 2050, alleviate fuel poverty, and enhance building standards across the country. Stakeholders, including homeowners, landlords, energy assessors, and industry professionals, are encouraged to participate in the consultation to shape the future of the EPB regime.

The outcomes of this consultation are expected to influence future legislation and policies related to building energy performance, with potential implementation of new EPC metrics anticipated in the second half of 2026.

EPC Equivalents Beyond the UK: US, Australia and New Zealand

While EPCs are a UK and EU framework, equivalent commercial building energy rating and disclosure requirements exist in other major markets. If you manage property across multiple jurisdictions, here is what you need to know.

United States: Mandatory Benchmarking and Emissions Caps

The US does not have a single national EPC equivalent, but major cities and states have enacted mandatory energy benchmarking laws for commercial buildings:

New York City requires all buildings over 25,000 sq ft to benchmark energy and water consumption annually under Local Law 84. More significantly, Local Law 97 — part of the Climate Mobilization Act — imposes carbon emissions caps on these buildings. The first penalty year is 2026, with fines of $268 per metric ton of CO2 over the annual limit.
California mandates energy benchmarking for commercial buildings over 50,000 sq ft under AB 802, with non-compliance penalties of up to $2,000 per day.
Washington State is implementing a Clean Buildings Performance Standard with tiered deadlines: buildings over 220,000 sq ft must comply by June 2026, 90,000–220,000 sq ft by June 2027, and 50,000–90,000 sq ft by June 2028.

Australia: NABERS Ratings

Australia's National Australian Built Environment Rating System (NABERS) is the closest equivalent to the UK's EPC for commercial buildings. Key updates for 2026:

From July 2025, NABERS Energy benchmarks are being refreshed to integrate 2024 National Greenhouse Accounts factors. Nearly 70% of NABERS-rated office buildings may see rating reductions — approximately 0.5 stars from 2025 and up to 1 star by 2030 — as the methodology adjusts to reflect the grid's increasing renewable energy share.
From July 2026, all new Australian government leases must achieve a minimum 6.0 NABERS Energy stars and be all-electric.

New Zealand: Building Code H1 and Government Standards

New Zealand updated its Building Code H1 Energy Efficiency standards in November 2025, with a transition period running until November 2026. While NZ does not have a direct EPC equivalent for commercial leasing, government agencies owning or leasing office accommodation above 2,000 m² must hold a base-build energy rating, with tenancy ratings required for buildings above 5,000 m².

Frequently Asked Questions About Commercial EPCs

When is an EPC not required for commercial property?

An EPC is not required for certain types of commercial properties, such as places of worship, temporary buildings with planned use times of two years or less, industrial sites, workshops, and non-residential agricultural buildings with low energy demand.

Do commercial properties need an EPC?

Yes, most commercial properties need an EPC when they are sold, rented, or constructed.

What is the minimum EPC rating for commercial property?

The minimum EPC rating for commercial properties is typically an 'E', though this can vary depending on local regulations.

Do I need an EPC for a commercial lease renewal?

Yes, an EPC is required for a commercial lease renewal unless exemptions apply.

How much does a commercial EPC cost?

The cost of a commercial EPC can vary widely depending on the size, complexity, and location of the property. It could range from a few hundred to several thousand pounds.

How to improve a commercial EPC rating?

Improving a commercial EPC rating can be achieved by installing LED lighting, upgrading heating and cooling systems, adding insulation, utilizing renewable energy sources, improving ventilation, and implementing an Energy Management System (EMS).

Is an EPC required for a commercial lease renewal?

An EPC is generally required for a commercial lease renewal unless the building is exempt.

Who is responsible for a commercial EPC – the landlord or tenant?

The responsibility typically falls on the landlord; however, if a tenant makes changes affecting the energy performance, they may need to obtain an EPC.

Can you sell a commercial property without an EPC?

Selling a commercial property without an EPC is generally not allowed unless the building is exempt from needing one.

Do all commercial properties require an EPC?

Not all, but most commercial properties will require an EPC when being sold, leased, or constructed. There are specific exemptions as noted above.

Take control of your building's energy performance. CIM's analytics platform gives you the real-time data to optimise operations, cut energy costs, and improve your EPC rating ahead of the 2028 and 2030 MEES deadlines. Book a demo →

How Building Analytics Data Supports EPC Assessors

An EPC assessment is only as good as the information the assessor has to work with. In practice, many commercial assessments rely on default assumptions — the assessor records what they can observe during a site visit, and the modelling software fills gaps with conservative estimates. The result is often a rating that undersells the building's actual performance.

Building analytics platforms change this dynamic by giving assessors access to:

Verified operational data. Rather than relying on nameplate ratings for boilers, chillers, and AHUs, assessors can review actual energy consumption profiles. This is particularly valuable for buildings that have been retrofitted — a new condensing boiler may be installed, but without documentation the assessor may default to a less efficient assumption.
Heating and cooling schedules. Analytics data shows exactly when systems run and at what setpoints. If a building already operates a well-optimised schedule, this evidence can support a better rating than a standard occupancy assumption would produce.
Lighting and controls verification. Platforms that monitor lighting circuits can confirm the presence and operation of daylight dimming, occupancy sensing, and time scheduling — all of which positively influence the EPC calculation.
Zone-level granularity. For larger buildings with mixed-use zones, analytics data can help assessors differentiate between areas with different energy profiles, leading to a more accurate overall rating.

The practical benefit is straightforward: better data in means a more accurate (and often improved) rating out. For buildings that have invested in efficiency measures but lack the documentation to prove it, analytics data closes the evidence gap.

Maximizing Your EPC Score with CIM's Building Analytics Platform

While the steps mentioned above are crucial for enhancing your EPC (Energy Performance Certificate) rating, the integration of CIM's Building Analytics Platform takes your energy efficiency journey to the next level. Here's why CIM's building energy management system is instrumental in boosting your EPC score and delivering substantial value to your commercial property:

Real-Time Monitoring: CIM's platform provides continuous, real-time monitoring of energy consumption and building performance. This feature enables immediate adjustments and optimizations, ensuring your building operates at peak efficiency at all times. CIM plays the role of an HVAC monitoring system, ensuring your most energy-intensive equipment is operating as efficiently as possible.

Data-Driven Insights: Leveraging advanced data analytics, CIM's platform identifies inefficiencies and areas for improvement that might otherwise go unnoticed. This data-driven approach empowers you with the knowledge needed to make informed decisions and take targeted actions for energy savings.

Automated Controls: CIM's EMS seamlessly integrates with your existing building systems, allowing for the automation of heating, cooling, lighting, and ventilation. Automation ensures that energy is used optimally, reducing waste and operational costs.

Cost-Effectiveness: One of the most significant advantages of CIM's platform is its ability to deliver substantial cost savings. By intelligently managing energy consumption, you can expect a significant reduction in energy expenses, improving your bottom line.

Sustainability: CIM's platform contributes to environmental sustainability by minimizing energy waste. With reduced energy consumption, your carbon footprint shrinks, aligning your building with green and sustainable practices.

Incorporating CIM's Building Analytics Platform into your energy efficiency strategy not only enhances your EPC score but also brings about tangible benefits.

You'll experience improved cost-effectiveness, more sustainable operations, and a competitive edge in the commercial property market.