EPC Caerphilly

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No Designated Assessor covers Caerphilly yet. If you’re an accredited domestic energy assessor working in this area, claim the town and customer enquiries come straight to you — no panel, no commission.

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EPC in Caerphilly – Energy Performance Certificates

If you’re selling or letting a property in Caerphilly, you’ll need a valid Energy Performance Certificate (EPC). An EPC shows how energy-efficient a property is and is a legal requirement before it can be marketed for sale or rent.

If you’re unsure what an EPC involves or when it’s required, see our guide: What is an EPC?

Local EPCs for Caerphilly properties

Caerphilly has a clearly defined housing mix, shaped by the town’s growth around Caerphilly Castle and its development as a commuter town for Cardiff.

EPCs are commonly required for properties in areas such as:

  • Lansbury Park – predominantly post-war housing, where insulation levels and heating systems can vary significantly

  • Mornington Meadows – newer residential development, often achieving stronger EPC ratings than older stock

  • Central Caerphilly – traditional terraced housing close to the town centre and castle, sometimes with solid walls and older construction methods

Because EPC ratings are influenced by construction age, insulation, and heating systems, properties across Caerphilly can produce very different results even within short distances of each other.

What happens during an EPC assessment?

During an EPC assessment in Caerphilly, the assessor will typically review:

  • Property size, layout, and age

  • Wall construction and insulation (where visible)

  • Loft or roof insulation (if accessible)

  • Heating system, controls, and hot water provision

  • Windows, glazing, and fixed lighting

The assessment is non-invasive and usually takes 30–60 minutes, depending on the size and type of property.

How quickly can I get an EPC in Caerphilly?

In most cases:

  • Appointments are available within a few days

  • The site visit is completed in under an hour

  • The EPC is lodged on the national register within 24 hours of the assessment

This allows sellers and landlords to move forward quickly with marketing or compliance.

EPCs for landlords and sellers in Caerphilly

You’ll need an EPC if you are:

  • Selling a house or flat in Caerphilly

  • Letting a residential property

  • Advertising a property through an estate or letting agent

Landlords must also ensure their property meets Minimum Energy Efficiency Standards (MEES). Further details can be found here: EPC requirements for landlords.

Book an EPC in Caerphilly

To arrange an EPC in Caerphilly, use our assessor search to check availability, confirm pricing, and book an appointment.

If you’re looking for an EPC elsewhere in the area, you can also visit:

If a certificate was lodged in the last ten years it may still be valid: check an EPC before booking a new one.

EPC data for Caerphilly

Figures below are for the Caerphilly local authority area, from the Energy Performance of Buildings Register to 2026 Q2.

2,469EPCs reach their 10-year expiry in the next 12 months
Band CThe most common rating, on 51% of certificates
45%Rated D or below, against 46% nationally
£943Average estimated heating cost a year

That expiry count is certificates lodged ten years ago and now coming up for renewal. Some of those homes have already been re-certified since, which authority-level data cannot show, so treat it as the ceiling rather than a to-do list.

How Caerphilly rates

Share of the 18,409 certificates lodged in the five years to 2026 Q2. This is the certificates lodged, not a survey of every home in the area.

What gets assessed around here

78% of the certificates lodged here are for houses. The average floor area is 83.8m², about the England and Wales average. Estimated heating costs average £943 a year, in line with the national figure. 33% of certificates were lodged for rented homes.

Radon in Caerphilly

Caerphilly sits in the lowest radon band. The UKHSA and British Geological Survey estimate that less than 1 in 100 homes in the 1km square covering the town centre reach the radon action level of 200 becquerels per cubic metre. Radon is not part of an EPC survey and does not affect the rating. At this level it is not usually a concern, though individual homes can still vary. The atlas is indicative and works to a 1km grid, so it describes the area rather than any one property.

What an EPC costs in Caerphilly

An EPC around here generally costs between £55 and £150, though it depends on the property: floor area, whether there are rooms in the roof, extensions, and how far the assessor travels all move the price. We are not a panel and we do not set anybody's fees, so the figure you are quoted comes from the assessor doing the work. Contact one above for a price on your property.

Sources: MHCLG Energy Performance of Buildings Certificates live tables, 2026 Q2; UKHSA and British Geological Survey Indicative Atlas of Radon. Prepared 2026-09-11.

Elmhurst accredited EPC assessor

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