f your property’s Energy Performance Certificate (EPC) rating has dropped after a new assessment, you’re not alone—and the reasons can be both technical and practical. Whether you’re a homeowner, landlord, or investor, understanding what affects your EPC score is crucial, especially with changing regulations and expectations in the UK property market.
In this article, we’ll explore:
Why EPC scores may decline over time
Technical factors that influence EPC reevaluation
What you can do to improve your EPC rating
Need a fast reassessment? Book a Same-Day EPC across London with Urgent EPC.
What Causes an EPC Rating to Drop?
An EPC is valid for 10 years, but energy standards, property conditions, and EPC calculation methodologies can evolve—meaning that what was once a ‘C’ rating can become a ‘D’ during a reevaluation. Here’s why:
1. Updated EPC Software and Criteria
The UK government periodically updates the EPC assessment tools to reflect current energy standards. These changes can alter:
How insulation and heating systems are scored
The emphasis on renewables vs. traditional systems
CO₂ emissions weighting
Even if your property hasn’t changed, the calculation might have.
2. Wear and Tear or Degraded Features
Older boilers, damaged insulation, or single-glazed windows can cause energy efficiency to decline. If your EPC assessor notices these issues during a fresh survey, your score will reflect the drop in performance.
3. Lack of Evidence During Assessment
To get a favourable score, assessors require evidence of upgrades—for example, photos of insulation, invoices for solar panels, or documentation for double glazing. If you don’t provide this, features may be rated conservatively.
💡 Need help compiling EPC evidence? Our experts can guide you—contact us today.
How to Prevent or Reverse a Decline in Your EPC Rating
Here’s how to ensure your next EPC assessment works in your favour:
✅ Upgrade your heating system to an energy-efficient boiler or heat pump
✅ Add loft or cavity wall insulation
✅ Install LED lighting throughout
✅ Use smart heating controls
✅ Switch to double or triple-glazed windows
✅ Ensure assessors have access to certificates and records
Don’t Let Your EPC Hold You Back
Whether you’re selling, renting, or renewing your EPC, a low score can impact property value and legal compliance—especially for landlords under MEES regulations.
📌 Check your current EPC status or book an inspection now at https://urgentepc.co.uk/residential-epc/.
Contact Urgent EPC
We specialise in:
📍 EPCs across London and Greater London
⚡ Same-day EPC services
✅ Residential & commercial assessments
📞 Call Us: +44 7741 812 864
📧 Email: info@samedayepc.co.uk
📍 Book Online: https://urgentepc.co.uk/contact-us/
Final Thought
A drop in your EPC rating doesn’t mean your home is inefficient—it means it’s time for a smart energy strategy. With the right improvements and support from trusted assessors like Urgent EPC, you can bounce back to a better grade—fast.
