Historic homes are full of character, charm, and heritage value—but they also pose unique challenges when it comes to Energy Performance Certificates (EPCs). Improving energy efficiency while maintaining the authenticity of listed or conservation properties requires a delicate balance.
Why EPCs Matter for Historic Homes
An EPC measures a property’s energy efficiency on a scale from A (most efficient) to G (least efficient). While modern homes are built with insulation and efficiency in mind, many period properties struggle to achieve high ratings. Yet, sellers and landlords are still legally required to obtain an EPC. Learn more about the assessment process on our Services – EPC Assessors in London page.
The Challenges of EPC for Listed Properties
Restricted Alterations
Historic and listed buildings are protected by conservation laws. This often prevents owners from installing double glazing, external wall insulation, or solar panels—common upgrades that boost EPC scores.Solid Walls and Older Construction
Many period homes were built with solid walls and minimal insulation. Heat retention is poor, making it harder to achieve a higher EPC rating.Traditional Windows and Doors
Timber sash windows and original doors may be part of the property’s character but usually perform worse than modern alternatives in energy efficiency terms.Heating Systems
Older properties often rely on outdated boilers or open fires, which consume more energy compared to modern systems.
EPC Exemptions for Historic Buildings
Not all historic homes require improvements to meet EPC minimum standards. In fact, EPC exemptions may apply if energy upgrades would “unacceptably alter” the building’s character. To learn more, see our guide on EPC Exemptions.
Balancing Efficiency with Preservation
Secondary Glazing: Installing discreet secondary glazing can improve insulation without affecting heritage windows.
Loft Insulation: Adding insulation in roof spaces is often acceptable and significantly reduces heat loss.
Draught Proofing: Sealing gaps around windows, doors, and floors enhances efficiency without altering appearance.
Efficient Heating Systems: Upgrading to a more modern boiler can improve EPC ratings while respecting the property’s design.
Do You Need a New EPC After Renovating a Historic Home?
Yes. If you make significant energy upgrades or plan to sell or rent, you’ll need an updated EPC. Check our Pricing page for costs or schedule an appointment through our Booking page.
Expert Help for Historic Homes
Improving EPC ratings in historic properties requires specialist knowledge. Our accredited assessors can guide you through compliant and practical energy-saving solutions. Learn more about us on our About Us page, or Contact Us for tailored advice.
