Commercial property landlords on the South Coast are facing a challenging environment. While much of the conversation around commercial real estate has focused on hybrid working, a more immediate operational challenge has been building: the combination of volatile energy markets and tightening regulations.

For property owners across Southampton, Portsmouth, Fareham, and the M27 corridor, a low Energy Performance Certificate (EPC) rating coupled with high energy bills is no longer just a sustainability issue. It is a direct threat to asset value, tenant retention, and cash flow.

Here is a look at the dual threat facing South Coast landlords and what you can do to protect your investments.

Threat 1: The Obsolescence of Lower-Rated Stock

The legal baseline under the Minimum Energy Efficiency Standards (MEES) has already made it unlawful to let or continue letting a commercial property with an EPC rating of F or G.

The long-term trajectory for commercial MEES is clear: by 2031, all rented non-domestic buildings over 1,000 square metres must achieve a minimum EPC rating of B. While the previously proposed interim deadline of a C rating by 2027 was dropped – giving landlords more breathing room to align works with lease renewals – the final target remains the same. Furthermore, properties under 1,000 square metres remain under close enforcement scrutiny to ensure they firmly maintain at least their baseline E rating.

If your asset is sitting at a D or an E, its shelf life is ticking away. A property that cannot legally be let stops generating income, which drastically drops its market value.

Threat 2: The Tenant Power Shift

Even outside of strict legal compliance, high energy bills have completely shifted tenant behavior. When utility costs are high, occupiers look closely at total occupational costs – not just the base rent.

A drafty, poorly insulated 1990s industrial unit or an office building reliant on outdated fossil-fuel heating is a financial liability for a tenant. Faced with sky-high energy bills, modern business owners are simply walking away. They are willing to pay higher base rents for a prime, energy-efficient building because they know their utility bills will be significantly lower.

If your building has a poor EPC rating, you face a double blow: you may have to discount your rent to attract interest, and you will face much longer void periods.

How South Coast Landlords Can Respond

The good news is that de-risking your portfolio doesn’t necessarily mean spending millions on a complete building overhaul. Many properties can significantly boost their EPC scores through targeted, cost-effective interventions.

1. Audit and Benchmark Immediately

Don’t wait for a lease renewal or a sale to find out your building has dropped a grade under the newer, stricter assessment criteria. Commissioning a professional commercial EPC survey will establish your actual baseline.

2. Focus on the Low-Hanging Fruit

You don’t always need to install solar panels on day one. Significant EPC improvements can often be made by:

• Upgrading to smart, daylight-dimming LED lighting with occupancy sensors.
• Tightening HVAC schedules and installing modern controls to prevent heating and cooling from running simultaneously.
• Improving basic fabric insulation and window glazing.

3. Align Upgrades with Strategic Triggers

If a tenant is vacating or a lease is coming to an end, this is your golden window. Working with a building consultancy team allows you to map out dilapidations and capital expenditure concurrently. Upgrading the building while it is empty avoids tenant disruption and ensures it goes back onto the market with a premium, future-proofed rating.

The Bottom Line

The commercial market is splitting into two tiers: efficient, highly lettable buildings that command strong yields, and inefficient buildings that face rising vacancies and eventual legal obsolescence.

Ignoring a low EPC rating because 2031 feels far away is a high-risk strategy. By auditing your assets and making incremental improvements now, you can insulate your portfolio against energy volatility, protect your asset value, and keep the South Coast’s best tenants in your buildings.

Need an Energy Strategy for Your Property?

Whether you need a baseline valuation, advice on lease regearing during energy refits, or asset management support to future-proof your portfolio, Hellier Langston has the regional expertise to guide you.

Get in touch with our South Coast team today to discuss your commercial property strategy.