EPC Compliance for Listed Buildings: What Landlords Can and Can’t Do

Listed buildings present a genuine challenge for EPC compliance. Standard energy efficiency improvements — external wall insulation, replacement windows, solar panels — can conflict with the legal duty to preserve the building’s character and historic fabric. But the idea that listed buildings are automatically exempt from EPC requirements is a misconception that could cost landlords up to £30,000 per property.

This guide explains exactly where the rules stand for listed buildings, what exemptions genuinely apply, which improvements are typically permitted, and how to navigate the overlap between conservation law and energy efficiency regulation.

Do listed buildings need EPCs?

Yes, in almost all cases. The EPC exemption for listed buildings is extremely narrow. Under the current regulations, a listed building is only exempt from requiring an EPC when the property is “officially listed or protected” and compliance with minimum energy performance requirements would unacceptably alter the building’s character or appearance.

This is not a blanket exemption for all listed buildings. It applies only where the specific energy efficiency measures that would be needed cannot be carried out without unacceptably changing the building. A Grade II listed Georgian townhouse that could benefit from loft insulation, heating controls upgrades and LED lighting — none of which affect its external character — would not qualify for exemption.

The exemption is assessed on a case-by-case basis. You must demonstrate that you have explored all reasonable improvements and that the ones remaining (which would bring you to Band C) would genuinely and unacceptably alter the building’s character.

The listed building exemption in detail

To register a listed building exemption on the PRS Exemptions Register, you need to demonstrate all of the following:

• The property is officially listed (Grade I, Grade II* or Grade II) or in a conservation area where relevant restrictions apply
• You have identified all possible energy efficiency improvements for the property
• At least one improvement that would be needed to reach Band C has been refused by the local planning authority or would conflict with listed building consent requirements
• You have carried out all improvements that are permitted — the exemption only covers the improvements you genuinely cannot make

This last point is critical. You cannot simply say “it’s listed, therefore exempt.” You must demonstrate that you have done everything you can and that the remaining gap to Band C is caused by restrictions specific to the listing.

Conservation area considerations

Properties in conservation areas face a different set of restrictions. Being in a conservation area does not automatically make a property “listed,” and the exemption rules are different:

• External appearance: Conservation area restrictions typically apply to the external appearance of the building. External wall insulation, replacement windows that alter the character of the street frontage, and externally visible solar panels may require planning permission and may be refused.
• Internal works: Internal insulation, heating system upgrades, loft insulation, draught proofing and lighting improvements are generally not restricted by conservation area status. These works do not affect the external appearance.
• Rear elevations: Many conservation area restrictions focus on the front elevation and publicly visible aspects. Improvements to the rear (rear wall insulation, rear windows, solar panels on rear-facing roof slopes) may be permitted even when front-elevation changes are not.

If you are in a conservation area and uncertain about what is permitted, consult your local planning authority before commissioning work. A pre-application enquiry can clarify what will and will not be approved.

What improvements are typically permitted

Even for listed buildings, many energy efficiency improvements do not affect the historic fabric or character. The following are generally acceptable for most listed properties:

• Loft insulation: Laid between joists in the loft space, invisible from outside and reversible. Almost always permitted.
• Draught proofing: Brush strips, foam seals and secondary glazing that do not alter the original windows. Usually permitted.
• LED lighting: Replacing bulbs does not require listed building consent.
• Heating controls: Smart thermostats, TRVs and programmers do not alter the building fabric.
• Boiler replacement: Replacing a boiler with a modern condensing model in the same location is usually straightforward, provided pipework routes do not damage historic fabric.
• Internal wall insulation: In some cases, thin internal insulation boards can be applied without significantly affecting room proportions or original features. This requires careful assessment and may need listed building consent.
• Underfloor insulation: Where suspended timber floors allow access from below, insulation can be installed between joists without affecting the visible floor surface.

Improvements that are more likely to be refused for listed buildings include external wall insulation (which changes the building’s external appearance), replacement windows (particularly if the originals are historic), and externally mounted solar panels on prominent elevations.

How to register a listed building exemption

If you have exhausted all permitted improvements and your property still cannot reach Band C, you can register an exemption:

• Step 1: Carry out all energy efficiency improvements that are permitted under your listed building consent or planning restrictions.
• Step 2: Commission a new EPC after the permitted works are complete to confirm the property’s current rating.
• Step 3: Obtain written evidence that the remaining improvements (which would bring you to Band C) cannot be carried out. This could be a refusal of listed building consent, a letter from the conservation officer, or a heritage assessment from a qualified professional.
• Step 4: Register the exemption on the PRS Exemptions Register with supporting documentation.

The exemption is valid for five years. After that, you must reassess whether circumstances have changed (for example, if new heritage-compatible improvement technologies have become available) and re-register if the exemption still applies.

For a full overview of all available exemptions, including the cost cap exemption and consent exemptions, see our guide on EPC exemptions for 2030.

Practical approach for Grade II listed properties

Grade II is by far the most common listing designation, covering around 91% of all listed buildings in England. Grade II listed properties generally have more flexibility for sympathetic improvements than Grade I or Grade II* buildings.

A practical compliance strategy for a Grade II listed rental property:

• Start with the no-consent improvements: LED lighting, draught proofing, heating controls upgrade, loft insulation. These collectively can gain 7–15 SAP points with no heritage impact.
• Assess the heating system: If the property has an old non-condensing boiler, replacing it with a modern condensing model gains 3–8 SAP points and usually does not require consent.
• Explore secondary glazing: Rather than replacing historic windows, secondary glazing (an additional pane fitted inside the existing frame) preserves the original windows while improving thermal performance. This is often acceptable for listed buildings.
• Consider internal wall insulation selectively: Thin insulation on the coldest walls (typically north-facing) can improve SAP scores without affecting the entire interior. Consult a conservation-accredited architect for advice.
• Document everything: Keep records of what you have done, what you investigated and what was refused. If you end up registering an exemption, this documentation is your evidence.

For the full picture of what Band C requires and how fines work, see our guide on EPC Band C requirements for landlords in 2030.