Energy Performance Certificates (EPCs) are legally required for most properties in the UK, providing a rating of energy efficiency from A (most efficient) to G (least efficient). However, not all buildings fall under this requirement. Temporary structures, in particular, often escape mandatory EPC assessments, creating a notable loophole in energy regulations.

What Are Temporary Structures?

Temporary structures include:

  • Modular or mobile units

  • Pop-up retail or event spaces

  • Certain construction site buildings

  • Seasonal accommodation

These structures are often short-term installations and are not considered permanent dwellings, which is why EPC legislation frequently exempts them.

Why Temporary Structures Are Exempt

The exemption exists because EPCs are designed to assess long-term energy efficiency and environmental impact. Temporary structures:

  • Have limited lifespans, so energy efficiency improvements may not be cost-effective

  • Often lack full-scale heating, cooling, or insulation systems

  • May move locations, complicating assessment and compliance

Implications for Property Owners and Tenants

  • Energy Awareness Gap: Without EPC assessments, occupants of temporary structures may be unaware of energy consumption and costs.

  • Regulatory Loophole: Developers or event organizers may not face pressure to implement energy-efficient solutions.

  • Potential Cost Implications: Temporary but energy-intensive structures can increase utility usage unexpectedly.

How to Address the Loophole

Even if temporary structures are exempt:

  • Voluntary EPC Assessment: Some owners opt for assessments to improve energy efficiency awareness.

  • Implement Energy-Saving Measures: Insulation panels, LED lighting, and efficient heating or cooling can reduce consumption.

  • Plan for Future Use: Temporary structures intended for repeated deployment can benefit from design upgrades aligned with EPC standards.

Why Choose EPC Rate?

EPC Rate provides expert EPC assessments across London, including guidance on which structures require certification and how to optimize energy efficiency:

For advice or certification, contact EPC Rate today.