Important New 2026 EPC Changes for Cornwall Commercial Landlords

EPC Changes for Commercial Properties in Cornwall (2026 and Beyond): What Landlords Need to Know

Energy Performance Certificates (EPCs) have been on landlords’ radars for years, but the next phase of reform marks a significant shift in how commercial property energy performance is measured, managed, and enforced. As we move through 2026, the direction of travel is clear: EPCs are becoming more detailed, more closely linked to net zero policy, and increasingly central to whether commercial property can legally be let. For landlords in Cornwall, where much of the commercial stock is older, coastal, or heritage-led, this is especially relevant. This guide focuses specifically on upcoming EPC reform and how it is expected to affect commercial landlords across Cornwall, particularly in older and coastal property stock. If you want broader context on compliance obligations, you can also read our guide to commercial property compliance in Cornwall.

What Is an EPC and Why It Matters

An Energy Performance Certificate (EPC) rates a building’s energy efficiency from A (most efficient) to G (least efficient). It considers factors such as insulation, heating systems, lighting, and overall energy demand. For commercial properties in England and Wales, EPCs are generally required when a building is constructed, sold, or let, subject to certain exemptions. Under the Minimum Energy Efficiency Standards (MEES):

• Since April 2018, a commercial property has needed an EPC rating of at least E to be lawfully let on a new lease or renewal.
• Since 1 April 2023, that same minimum E rating has applied to continuing existing tenancies, not just new lettings.

Put simply, if a commercial property is rated F or G and no valid exemption is in place, it is likely to be unlawful to let. Non-compliance can result in:

• Significant financial penalties
• Forced vacancy
• Reduced asset value
• Reputational risk through public enforcement registers

In practical terms, EPCs are no longer a background compliance document. They directly affect lettability, valuation, and long-term strategy.

EPC Reform: What Is Changing Around 2026

The government has consulted on reforms to how EPCs are produced and presented for non-domestic property. While not all changes are yet finalised in legislation, the anticipated introduction point for updated EPC metrics is the second half of 2026. What matters most is the direction of change rather than the exact detail.

A Shift Away From a Single Headline Rating

Future EPCs are expected to place greater emphasis on multiple performance indicators rather than one headline score. Proposals include clearer reporting on:

• Building fabric performance (insulation, heat loss)
• Heating system efficiency and emissions
• Overall energy demand
• Readiness for low-carbon systems

This matters because some buildings that currently achieve an E rating through partial upgrades may perform differently under revised weighting systems.

EPC Validity Periods

At present, EPCs remain valid for up to 10 years. There has been consultation around shortening validity periods, but no final decision has been made. Landlords should expect more frequent updates to EPC data in future planning cycles.

Data Quality and Oversight

Expect tighter assessment standards, improved data accuracy, and greater scrutiny of EPC reports. With EPC data already publicly accessible, inconsistencies are becoming easier to identify and challenge.

Listed and Historic Buildings: A Common Misunderstanding

A common misconception is that listed buildings are automatically exempt from EPC requirements. This is not the case. Where a building is protected (such as listed status or conservation area constraints), exemptions may apply only where compliance would unacceptably alter the character or appearance of the building. This is assessed on a case-by-case basis. Key points for Cornwall landlords:

• Heritage status does not automatically remove EPC obligations
• Evidence is required to support exemptions
• Specialist assessment is often necessary

Future reforms are expected to clarify rather than broaden exemption criteria.

The Direction of MEES: Planning Beyond EPC E

The current legal minimum for commercial lettings remains EPC E, subject to exemptions. However, policy direction strongly indicates further tightening over time. For non-domestic rented property, the widely referenced trajectory includes:

• A phased tightening of minimum standards
• A long-term target of EPC B by 2030 (policy direction, not final law)

Interim targets such as EPC C have been discussed, but should not be treated as confirmed legislation. The key takeaway is simple: minimum compliance today is unlikely to remain sufficient long-term.

What This Means for Cornwall Landlords Specifically

Cornwall’s commercial property market has several defining characteristics:

• A high proportion of older, pre-war buildings
• Coastal exposure affecting building fabric
• Mixed-use town centres
• Tourism-led occupiers sensitive to operating costs

In practice, this means:

• Many assets already sit close to minimum EPC thresholds
• Fabric performance will become increasingly important
• Energy efficiency will influence tenant demand and retention
• Stronger EPC ratings improve lettability, financing, and valuation

There is also opportunity:

• Reduced void periods
• Stronger tenant appeal
• Improved rental resilience
• Long-term asset protection

Energy performance improvements often link closely with wider asset management decisions, particularly across multi-let sites and estates. For related operational context, you may also find our guide to managing commercial service charges useful.

Practical Steps Landlords Should Be Taking Now

You do not need to rush into major works, but you do need a structured plan.

1. Review your current EPCs
   Identify D and E rated properties as priority assets for review.
2. Understand upgrade options
   Focus on measures that improve long-term efficiency, not just short-term compliance.
3. Document evidence properly
   Where upgrades are not viable, ensure exemption documentation is correctly recorded.
4. Review lease structures
   Understand how responsibilities and costs are allocated.
5. Seek early advice
   Early planning avoids rushed and more expensive compliance decisions.

How South West CPM Can Help

At South West CPM, we manage commercial property across Cornwall with a focus on compliance, asset protection, and long-term value. We support landlords by:

• Reviewing EPC and MEES exposure across portfolios
• Advising on practical upgrade strategies
• Managing EPC assessments and exemptions
• Coordinating works with trusted local contractors
• Aligning energy performance with leasing strategy

You can also explore our wider support services for commercial property management in Cornwall.

Final Thoughts

EPC reform is not just about compliance — it is about the future viability of commercial property. Landlords who plan early and take a structured approach will be best positioned to protect asset value and avoid disruption. Those who delay risk being forced into reactive, higher-cost decisions later. If you would like a clear, no-obligation review of how upcoming EPC changes affect your Cornwall properties, get in touch with South West CPM.

Need support with commercial property management in Cornwall?
Call us on 01872 301801 or email info@southwestcpm.co.uk.
Alternatively, get in touch here to discuss your property requirements.