Can a property’s EPC rating go down over time, even without structural changes?

Yes, a property’s EPC (Energy Performance Certificate) rating can go down over time, even if no major structural changes are made. Here’s why:

🔍 Reasons an EPC Rating May Decline Over Time:

1. Changes in EPC Assessment Criteria
   Government regulations and assessment standards can be updated. A home rated “C” a few years ago might now score lower under revised metrics.

2. Aging of Heating Systems & Insulation
   Over time, boilers, insulation, windows, and other components can lose efficiency due to wear and tear, reducing your property’s energy performance.

3. Technological Benchmarks Shift
   As newer buildings adopt more efficient technologies (like solar panels or air-source heat pumps), older homes may be rated less favourably in comparison.

4. Lack of Maintenance
   Poor upkeep of systems like heating, ventilation, or even simple draught-proofing can impact overall efficiency and lower your EPC score.

✅ Tip: How to Maintain or Improve Your EPC Rating

• Regularly service boilers and heating systems

• Upgrade to LED lighting

• Top up or replace loft and cavity wall insulation

• Consider renewable energy installations (e.g., solar PV)

• Keep documentation of all energy-related upgrades for future assessments

📌 Need a New or Updated EPC?

Visit Urgent EPC’s Residential EPC page for a fast and affordable energy assessment in London.
You can also explore our Same-Day EPC Service for urgent needs.

📞 Call us at +447741 812864 or
💬 Contact us here for a quote or guidance.