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Do Buildings Which Have Been Extended or Modified Require an EPC?

If you’ve recently extended, renovated, or modified a building, you may be legally required to obtain a new Energy Performance Certificate (EPC)—especially if these changes affect the property’s energy usage or thermal efficiency.

When Is a New EPC Required?

  • After Major Renovations: Structural modifications that change insulation, heating systems, or ventilation may affect your energy rating.

  • New Extensions: Adding a new wing, floor, or heated space (e.g., loft conversion) can change the overall efficiency and may trigger EPC requirements.

  • Change in Use: If the building’s use changes (e.g., from commercial to residential), a new EPC is usually required.

  • Before Sale or Rental: Any building being sold or rented after substantial changes must have an updated EPC reflecting the current condition.

Why It Matters

An accurate and up-to-date EPC is essential for:

  • Legal compliance under current building regulations

  • Accurate marketing when selling or letting the property

  • Avoiding penalties for providing incorrect or outdated EPCs

  • Qualifying for government incentives or financing


Get Your Updated EPC Quickly

At Urgent EPC, we offer:

  • Fast-track same-day EPC services

  • Fully qualified and accredited assessors

  • Coverage across London and Greater London

  • Detailed improvement recommendations

📞 Call Us Today: +44 7741 812 864
📧 Email: info@samedayepc.co.uk
💬 Book Your Assessment Now

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