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MEES Compliance in Action: How Landlords Are Upgrading Commercial Buildings - and What It Means for the Market

For years, Minimum Energy Efficiency Standards (MEES) sat somewhat ominously on the horizon – something landlords knew was coming but didn’t really need to act on. That’s changed.

MEES is now actively reshaping asset value, leasing strategy, and investment decisions all across the UK commercial property market.

With sub-E-rated properties already restricted from being let, and a likely trajectory toward EPC B by 2030, landlords have been given a clear choice: upgrade, reposition, or risk holding a stranded asset.

This isn’t about theory. It’s about what’s happening on the ground in our industry – and how smart landlords are responding. Because for many assets, the difference between compliance and non-compliance is now the difference between income and vacancy.

What Are MEES (Minimum Energy Efficiency Standards)?

First things first, what are MEES, and what’s the point of them? Basically, MEES sets a minimum standard for how energy efficient a building must be before it can be rented out.

In the UK, every property (from large commercial endeavours all the way down to domestic private rented property) is given an Energy Performance Certificate (EPC) rating from A to G, with A being the most efficient and G the least. 

MEES effectively draws a line in the sand: if your building falls below a certain rating, you can’t legally let it.

Right now, that minimum standard is E. That means if a property is rated F or G, landlords must improve it (or register a valid exemption) before they can lease it to tenants.

But MEES isn’t just about compliance. It was introduced as part of a broader push to reduce carbon emissions (Net Zero, remember?) and improve the efficiency of the UK’s building stock, which is a major contributor to energy use.

And increasingly, it’s not just about hitting the minimum. With future targets tightening, MEES is becoming a moving benchmark – one that’s reshaping how buildings are valued, upgraded, and traded across the market.

What MEES is Really Changing

The biggest impact of MEES isn’t regulatory - it’s structural. And since this regulation applies to any tenancy agreement over six months and can include sub-leases and licences, it’s far-reaching. Here are the main changes we’re seeing in the commercial property sector:

A Two-Tier Market is Emerging

There’s now a growing divide between the following:

• Compliant, energy-efficient assets commanding stronger demand
• Non-compliant buildings facing reduced liquidity and pricing pressure

This “brown discount” vs “green premium” dynamic is increasingly influencing valuations, lending decisions, and investor appetite.

Occupiers Are Driving the Shift

Tenants have started prioritising buildings with stronger EPC ratings, which is simply the wise move. Not just for compliance, but for operational cost savings, ESG alignment, and future-proofing. 

As shared by GRESB, energy performance is becoming a key leasing consideration. Since the UK is legally committed to achieving Net Zero by 2050, this just makes sense – a government department recently went so far as to require a C energy efficiency rating before accepting a lease agreement. 

MEES also offers occupiers a chance to reduce energy bills as well as their organisations' carbon footprint. Also, it may be possible for occupiers to use MEES to reduce or remove any liability towards dilapidations. 

So all in all, MEES is strengthening the position of tenants – particularly those prioritising cost efficiency and sustainability.

Asset Management is Now Active

Back in the day, property investment may have been almost all passive income, but these days, landlords are increasingly required to:

• Plan capital expenditure
• Phase upgrades around lease events
• Strategically reposition assets

The most effective energy efficiency measures won’t be the same for all landlords. So, in short, MEES has turned property ownership into somewhat of a more operational, hands-on discipline.

So, How Are Landlords Upgrading Buildings?

Across the UK, there’s no single approach to MEES compliance. Instead, landlords are deploying a mix of targeted energy efficiency improvements, modelling-led strategies, and full-scale retrofits depending on asset type and budget. 

In general, the approach taken often depends on whether the landlord is aiming for short-term compliance or long-term asset repositioning. Here are a couple examples of what landlords are doing to improve their MEES standing:

1970s Industrial Site: From G Rating to MEES-Compliant E

As we’ve mentioned - there are numerous approaches to MEES compliance, one of the most sophisticated of which is Level 5 EPC modelling. This method, which moves beyond guesswork and focuses on data-led decision-making, was used to shift a 1970s industrial site from G296 to E116.

The relevant improvements that led to this site achieving their minimum energy performance certificate included the following:

• Analysing the building’s current performance in detail
• Testing multiple upgrade combinations virtually
• Identifying the most cost-effective route to compliance

Instead of defaulting to the go-to interventions, the modelling showed the combination of relevant energy efficiency improvements that would deliver the required EPC rating with the lowest expense possible.

Quick Wins: Low Cost, Immediate Impact

Many landlords have started with relatively simple upgrades that can meaningfully improve energy consumption without major disruption. These include:

• LED lighting retrofits
• Improved insulation
• Smart energy controls and metering

These interventions are often enough to move a building from G or F to E, particularly when combined strategically.

Mid-Level Interventions: Targeted System Upgrades

Where quick wins aren’t enough, landlords are investing in more substantial improvements, like:

• HVAC system upgrades
• Improved glazing
• Roof and fabric enhancements

Dynamic simulation modelling (DSM) is being used more to test upgrade scenarios before a strategy is implemented. This type of predetermination helps landlords optimise cost vs EPC outcome.

Deep Retrofit & Repositioning

For older or truly poorly performing assets, incremental upgrades won’t quite cut it. In these cases, landlords are pursuing:

• Full plant replacement
• Façade and structural upgrades
• Change of use or redevelopment

This is where MEES intersects with long-term asset strategy - not just compliance, but repositioning buildings to meet future demand.

The Cost Question: Investment vs Risk

The biggest hesitation for landlords remains cost (of course)

But increasingly, the real question isn’t “Can I afford to upgrade?” - it’s “Can I afford not to?” Especially since E is not where things will end – there have even been discussions about making B the minimum for a valid EPC. 

So, without being proactive about energy efficiency:

• Properties may become unlettable
• Void periods increase
• Financing becomes more difficult
• Exit values are impacted

As Inteb notes, landlords who delay upgrades also put themselves in the difficult position of compressed timelines and higher costs closer to enforcement deadlines.

In contrast, proactive landlords are using MEES as a lever to:

• Enhance rental value
• Attract stronger tenants
• Future-proof assets

Turn Insight Into Opportunity with PropList

MEES isn’t just a simple regulatory change – it's part of a broader shift toward sustainable, performance-driven real estate. And it’s a part of a shift that the UK is taking very seriously.

It’s redefining what makes a building lettable, financeable, and investable. And in doing so, it’s accelerating the move toward a more transparent, efficiency-focused property market.

Whether you’re looking to secure future-proof, energy-efficient investments or identify undervalued properties with upgrade potential, having the right visibility is key.

Which is what Proplist is all about. On our platform, you can explore commercial properties for sale across the UK and compare opportunities with confidence.