Public DEC

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What is Public DEC Survey?

A Display Energy Certificate (DEC) is a legal requirement for certain public buildings in the UK. It shows the actual energy performance of a building based on real energy usage, presented on a clear A–G rating scale. The aim is to promote transparency, reduce energy costs, and encourage better sustainability practices.

At Stonebridge Surveying, we provide accurate and compliant DEC surveys for schools, hospitals, council offices, libraries, and other public buildings. With over a decade of experience, we help organisations stay compliant while identifying opportunities to improve energy efficiency.

A worker in a safety vest reviews a clipboard near a laptop, tablet, yellow hard hat, and walkie-talkie on solar panels, suggesting focused teamwork.

What is a Display Energy Certificate (DEC)?

A Display Energy Certificate (DEC) is an official document that shows the actual energy performance of a public building based on its yearly energy consumption. It is a legal requirement for public buildings in the UK with a total useful floor area over 250m² that are visited frequently by the public.

The certificate includes:

  • An energy rating from A (most efficient) to G (least efficient)

  • A clear comparison against benchmarks for similar buildings

  • Recommendations for improving energy performance

The DEC must be publicly displayed in a visible place within the building, ensuring transparency and encouraging energy efficiency.

Why is a DEC Important?

A DEC isn’t just about compliance, it’s about demonstrating responsibility and improving energy performance. By showing how efficiently a building is operated, it builds trust and accountability with the public.

Securing a DEC also:

  • Promotes energy awareness and sustainability

  • Helps organisations reduce energy costs over time

  • Ensures compliance with UK building regulations

  • Improves the organisation’s reputation and public trust

For schools, hospitals, government offices, and other public buildings, keeping a valid and up-to-date DEC is both a legal duty and a smart step towards long-term energy savings.

To Book a Domestic EPC

Whether you’re a landlord, letting agent, or homeowner, we make the EPC process straightforward and stress-free. At Stonebridge Surveying, we provide:

  • Quick, hassle-free appointments at a time that suits you

  • Fully compliant EPC certificates meeting all legal requirements

  • Competitive, transparent pricing with no hidden costs

  • Independent, expert guidance to help improve your rating

Our experienced team is trusted for professionalism and accuracy. When you book with us, you can be confident your EPC will be delivered on time, fully compliant, and with clear advice on how to save energy and reduce costs.

Accreditation

Frequently Asked Questions

Everything You Need to Know

Any public building in the UK over 250m² that is used frequently by the public must display a DEC.

 

Large buildings over 1,000m² need a new DEC every year, while smaller ones (250–999m²) are valid for 10 years.

A DEC shows the actual energy use of a public building, while an EPC rates the expected efficiency of a property.

It ensures compliance with UK law, promotes energy savings, and demonstrates transparency to the public.

 

You can easily book an appointment with us at a time that suits you. Our team will handle the process quickly and compliantly.

You’ll need property access and details of heating, lighting, insulation, and energy usage. Our surveyor will guide you.