For years, Energy Performance Certificates (EPCs) were treated as little more than a compliance requirement.

Today, they are becoming one of the most influential factors in commercial property value.

Across the UK, investors, lenders, occupiers, and developers are paying far closer attention to energy efficiency. What was once viewed as a secondary consideration is now influencing:

• investment decisions
• refinancing opportunities
• tenant demand
• refurbishment strategies
• and long-term asset value

For commercial property owners, understanding how EPC ratings affect value is becoming increasingly important.

What Is an EPC Rating?

An Energy Performance Certificate (EPC) measures the energy efficiency of a building.

Properties are graded from:

• A (most efficient)
• to G (least efficient)

The rating is based on factors including:

• insulation
• heating systems
• lighting efficiency
• glazing
• ventilation
• and overall energy performance

Commercial properties in the UK generally require a valid EPC when sold or let.

Why EPC Ratings Suddenly Matter More

The main driver is regulation.

Under the UK’s Minimum Energy Efficiency Standards (MEES), most commercial properties currently require a minimum EPC rating of E to be legally let, unless an exemption applies.

The regulations were introduced under the Energy Efficiency (Private Rented Property) (England and Wales) Regulations 2015.

However, the market increasingly expects standards above the legal minimum.

Many institutional investors, lenders, and tenants are now actively avoiding lower-rated buildings due to concerns around:

• future compliance costs
• rising energy prices
• sustainability targets
• and potential obsolescence

The result is a growing divide between efficient and inefficient buildings.

The Rise of “Stranded Assets”

A term increasingly used across the commercial property sector is “stranded asset.”

This refers to buildings that become economically unattractive because they:

• are expensive to upgrade
• fail environmental standards
• attract weaker tenants
• or become harder to finance

Older office buildings are particularly exposed.

Many were built before modern energy standards existed and now require significant refurbishment to remain competitive.

Properties with poor EPC ratings may face:

• reduced rental demand
• lower valuations
• increased void periods
• and downward pressure on yields

This trend is already influencing investment strategies across the market.

Lenders Are Paying Attention Too

Banks and commercial lenders are increasingly incorporating ESG and sustainability considerations into lending decisions.

In practice, this means EPC performance can influence:

• lending appetite
• refinancing terms
• debt pricing
• and valuation assumptions

Some lenders are already offering preferential “green lending” terms for higher-performing buildings.

Others are becoming more cautious around inefficient stock requiring significant future capital expenditure.

For investors relying on leverage, this can materially affect deal viability.

Tenants Are Becoming More Selective

Occupier expectations have also changed.

Businesses increasingly want premises that:

• reduce operating costs
• support sustainability commitments
• improve employee wellbeing
• and align with corporate ESG reporting

This is especially true among larger corporate occupiers.

As energy costs remain volatile, tenants are paying closer attention to building efficiency than ever before.

A stronger EPC rating can therefore improve:

• tenant appeal
• retention
• rental resilience
• and leasing competitiveness

What Actually Improves an EPC Rating?

Many owners assume EPC improvements require complete redevelopment.

In reality, targeted upgrades can significantly improve performance.

Common improvements include:

• LED lighting upgrades
• HVAC modernisation
• improved insulation
• solar panels
• smart building controls
• efficient glazing
• upgraded heating systems
• and energy-efficient plant and machinery

Importantly, many of these items may qualify for capital allowances.

The Tax Angle Many Owners Overlook

This is where commercial property owners often miss opportunities.

Energy-efficiency upgrades frequently involve qualifying plant and machinery expenditure.

Depending on the nature of the works, tax relief may be available through:

• Annual Investment Allowance (AIA)
• First-Year Allowances
• Writing Down Allowances
• or Structures and Buildings Allowance (SBA)

Qualifying items may include:

• electrical systems
• lighting
• air conditioning
• heating systems
• water systems
• security systems
• and certain integral features

Without specialist review, substantial qualifying expenditure is often overlooked.

Refurbishment Is Becoming a Strategic Tool

Many investors are now acquiring underperforming buildings specifically to reposition them.

The strategy is increasingly clear:

1. acquire older assets at discounted pricing
2. improve EPC performance
3. modernise occupier appeal
4. increase rental value
5. improve investment value

This is especially common within:

• secondary offices
• industrial units
• mixed-use buildings
• and older retail stock

In many cases, tax relief can materially improve the financial viability of these projects.

The Risk of Doing Nothing

One of the biggest risks facing owners is delay.

As regulations tighten and market expectations evolve, inefficient buildings may become progressively harder to:

• refinance
• let
• sell
• or insure competitively

Waiting until regulations force upgrades can also increase costs.

Forward planning allows owners to:

• phase expenditure strategically
• maximise tax relief
• and improve long-term asset resilience

Practical Questions Property Owners Should Be Asking

Commercial property owners should now be reviewing:

• What is the EPC rating across the portfolio?
• Which assets are most exposed to future regulation?
• What upgrade works may be required?
• Which improvements qualify for tax relief?
• How might lenders and tenants view the building in 3–5 years?

These questions are becoming central to asset management.

How CPA Tax Can Help

At CPA Tax, we help commercial property owners identify qualifying expenditure within refurbishment and energy-efficiency projects.

From capital allowances reviews to strategic tax planning around retrofit works, we work alongside investors, accountants, brokers, and lawyers to maximise value.

If you are considering refurbishment works or reviewing older commercial assets, we would be happy to discuss how tax relief may support your project.

📩 Get in touch with our team today.

 

Salman Sadiq, Director Email: salman@cpatax.co.uk

Babar Khan, Director Email: bk@cpatax.co.uk

 

Read some of our other articles:

EPC Targets & Tax Relief for Owners | CPA Tax

What Is the Annual Investment Allowance (AIA)? A Guide for Commercial Property Buyers | CPA Tax

Top 5 Tax Mistakes Commercial Property Buyers Make (And How to Avoid Them) | CPA Tax