Simple Ways to Improve Your Property’s EPC Rating
If you are a landlord or homeowner in Cardiff, Barry, or Penarth, you likely know that an Energy Performance Certificate (EPC) is a legal requirement before you can sell or rent out your property.
But an EPC is more than just a piece of paper. With energy prices remaining high and the UK government's focus on "Net Zero," having a high EPC rating (ideally a ‘C’ or above) can significantly increase your property’s value and make it much more attractive to potential tenants.
As local accredited assessors at Cardiff and Vale of Glamorgan EPCs, we see many properties that could easily jump up a band with a few small changes. Here are five effective ways to boost your rating before your next assessment.
1. Upgrade to LED Lighting
This is the quickest and cheapest win. During an EPC inspection, the assessor counts the number of fixed light fittings and identifies how many use low-energy bulbs. Replacing old halogen or incandescent bulbs with LEDs is a low-cost way to edge your score higher.
2. Top Up Your Loft Insulation
Many older homes in the Vale of Glamorgan have some insulation, but it’s often not thick enough. Current recommendations suggest a depth of 270mm. If your insulation is thin or uneven, adding a fresh layer can make a massive difference in your energy efficiency score—and your heating bills.
3. Install a Programmable Thermostat
An efficient boiler is great, but how you control it matters for your EPC. If you don't have a modern thermostat or thermostatic radiator valves (TRVs), the software assumes your heating is less efficient. Installing smart controls or TRVs allows for "zone control," which is looked upon favorably during the assessment.
4. Address Your Windows and Doors
While full double glazing is a larger investment, it is one of the most impactful ways to move from a ‘D’ or ‘E’ rating toward a ‘C’. If you already have double glazing, ensure the seals are intact. For those in conservation areas like parts of Penarth or Cardiff City Center, even high-quality secondary glazing can provide a boost.
5. Insulate Your Hot Water Cylinder
If you have a traditional hot water tank, check the "jacket." An uninsulated tank loses heat rapidly. Adding a simple, thick insulating jacket (usually costing less than £30) is a "quick fix" that assessors log as a positive energy-saving measure.
Why Choose a Local Cardiff EPC Assessor?
When you book an EPC, you want someone who knows the local housing stock—from the Victorian terraces of Roath and Canton to the modern developments in Barry Waterfront.
At Cardiff and Vale of Glamorgan EPCs, we provide:
Fast Turnaround: Certificates usually lodged within 24 hours.
Local Expertise: Fully accredited assessors covering Cardiff, Barry, Penarth, and beyond.
Competitive Pricing: Professional service with no hidden fees.
Need an EPC for your property? Don't wait until the last minute. Whether you're a landlord preparing for a new tenancy or a homeowner getting ready to sell, we’re here to help.