Published: 17/04/2026

EPC Rules Are Changing: What Landlords Need to Do Before 2030

Introduction

Energy efficiency has been creeping up the agenda for landlords for years, but we’re now getting to the point where it’s no longer something you can park for later.

The government’s direction is clear: rental properties will need to reach an EPC rating of C by 1 October 2030. That might feel a long way off, but in reality, for many landlords, the decisions around this need to start now.

This isn’t just about ticking a compliance box either. It’s about the long-term viability of your property, how lettable it is in the future, and ultimately what it’s worth.

Where Things Stand Today

At the moment, the rules are relatively straightforward. To legally let a property, it needs a valid EPC and must be rated at least an E. Most landlords are within that, and for years that’s been enough.

But the issue is that a large proportion of the market sits at a D, or E which is currently compliant, but won’t be in a few years’ time.

That’s where the shift is coming.

The Big Change: EPC C by 2030

The headline change is simple: by 2030, all rental properties will need to meet an EPC rating of C, unless a valid exemption applies.

What’s important here is that this isn’t just for new tenancies. It’s expected to apply across the board, meaning existing lets won’t be exempt from the rules.

So if a property can’t achieve a C rating, it may not be legally lettable at all.

Why This Isn’t as Straightforward as It Sounds

On paper, improving an EPC rating sounds manageable. In practice, it varies hugely depending on the property.

For some, it might be relatively simple. For others, particularly older properties, it becomes much more involved and expensive.

There is a proposed cost cap of £10,000 per property. If you spend up to that level and still can’t reach a C, you may be able to register an exemption.

The System Itself Is Changing Too

The EPC system itself is evolving. Currently, EPC ratings are heavily based on the cost of heating a property. The new approach is expected to focus more on insulation, building efficiency, and heating systems.

This means a property that achieves a C today may not necessarily achieve the same rating under the new system.

The Reality in Leeds: Why So Many Properties Fall Short of EPC C

One of the biggest misconceptions around EPC changes is that this is mainly an issue for very poor-quality housing. In reality, a lot of perfectly good, well-maintained rental properties — particularly in Leeds — are the ones that are going to struggle.

Take your typical Leeds investment stock: Victorian and Edwardian terraced houses, back-to-back terraces, and early 20th-century semis. These are the backbone of the rental market. They let well, they’re popular with tenants, and they’ve performed strongly as investments.

But from an EPC perspective, they often sit in that D band — just below where they need to be.

Why These Properties Struggle to Reach EPC C

The main issue isn’t neglect — it’s how they were built. Older properties are significantly less energy efficient than newer ones. In practical terms, that shows up in a few consistent ways.

Terraces don’t generally have cavity walls, which makes insulation much more difficult and expensive. They also tend to lose more heat through walls, floors and roofs compared to modern builds.

Even double glazing can perform poorly on EPC assessments if it’s older or not up to current standards. Heating systems and controls are another common issue, with older boilers and basic controls dragging scores down.

Most landlords have improved properties over time, but EPCs reward a complete package of efficiency rather than incremental upgrades.

What Actually Moves the Needle (D to C)

To move a property from a D to a C, you typically need a combination of improvements rather than just one. This often includes loft insulation upgrades, wall insulation where possible, heating system improvements, glazing upgrades, and general efficiency measures like LED lighting.

What Does It Cost in Reality?

Lower-level improvements such as lighting and controls might cost between £500 and £2,000.

Mid-range upgrades such as insulation improvements or window upgrades typically fall between £2,000 and £6,500.

More involved works, such as solid wall insulation or major upgrades, can cost between £6,000 and £10,000 or more.

For most Leeds landlords, this isn’t about bringing a bad property up to standard. It’s about taking a good, income-producing asset and deciding how far to invest in improving it.

Some properties will reach a C fairly easily with a handful of upgrades. Others will require more significant investment and careful consideration.

How We’re Advising Landlords on This

The key is not to treat every property the same. We help landlords identify which properties are easy wins, which require more investment, and how to prioritise improvements based on return as well as compliance.

Ultimately, this isn’t just about hitting EPC C. It’s about making commercially sensible decisions across your portfolio.

A Window of Opportunity

If you achieve an EPC rating of C before the new rules fully come in, that certificate is typically valid for 10 years. So there is an opportunity now to work within the current system and secure compliance.

Some properties will justify the investment and benefit from improved efficiency. Others may be more marginal, where the cost of improvement raises bigger strategic decisions. Doing nothing and leaving this until the last minute is likely to create problems.

What We’re Advising Landlords to Do Now

Start by understanding your current EPC ratings. You can download and review your existing EPC from the government website here https://www.gov.uk/find-energy-certificate.

Identify the areas that are likely to need work, starting with the most cost effective ways to make gains, and plan your improvements over time.
The move towards EPC C is part of a wider shift in the rental market. Those who take a proactive approach will be in a much stronger position in the coming years.

Not Sure Where Your Property Stands? Let’s Take a Look

If you’re unsure how these changes affect your property, you’re not alone.

At Dwell, we’re already working with landlords to review portfolios and create clear, cost-effective plans.

We can review your EPC rating, highlight improvements, advise on costs, and help you plan works in line with tenancies.

No pressure, no obligation. Just clear advice so you know exactly where you stand.
Get in touch with the Dwell team today to discuss your EPC requirements.