EPC Cornwall

This area is waiting for its local Designated Assessor

This area is available for an assessor to claim

No Designated Assessor covers Cornwall 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.

Claim Cornwall — start freeHow it works

JOIN OUR DEA NETWORK

For Cornwall, with its unique blend of old and new, the EPC is not just a legal requirement but a step towards a sustainable future. It guides homeowners and landlords in making informed decisions about energy efficiency, ensures compliance with government regulations, and plays a critical part in preserving the county’s environmental and historical integrity.

What Is an EPC?

An Energy Performance Certificate (EPC) is a key document that assesses and illustrates the energy efficiency of a property. It provides a rating from A (most efficient) to G (least efficient) and includes recommendations for improving energy efficiency. This certificate is crucial in the UK whenever a property is sold, rented, or built.

Benefits of an EPC for Property Owners in Cornwall

  1. Enhanced Property Value: Properties with higher EPC ratings can attract a higher market value. In scenic regions like Cornwall, where the property market is competitive, an efficient energy rating can be a significant selling point.
  2. Energy Cost Savings: An EPC not only highlights the current energy efficiency of a property but also suggests ways to reduce energy consumption, leading to substantial savings in utility bills.
  3. Environmental Impact: With increasing awareness about climate change, an EPC helps reduce the carbon footprint of a property, aligning with broader environmental goals.

Suggested Upgrades for Cornwall Property Owners

  1. Insulation Improvements: In older Cornwall properties, upgrading loft or wall insulation can significantly improve energy efficiency.
  2. Heating System Upgrades: Replacing old boilers with more efficient models or installing renewable energy sources like solar panels can boost a property’s EPC rating.
  3. Double Glazing Windows: Particularly in Cornwall’s coastal areas, installing double glazing can help reduce heat loss and protect against severe weather.

Government Regulations Regarding EPCs

The UK government has set specific regulations concerning EPCs:

  1. Requirement for Sale or Rent: An EPC is legally required when a property is sold or rented.
  2. Minimum Energy Efficiency Standards (MEES): Since April 2018, properties in England and Wales, including Cornwall, must have a minimum EPC rating of ‘E’ to be rented out. This regulation is aimed at phasing out less energy-efficient properties from the rental market.
  3. Future Regulations: The UK government plans to tighten these regulations further, aiming for a C rating for rental properties by 2025.

Why Homeowners and Landlords in Cornwall Need an EPC

  1. Legal Compliance: To avoid penalties, landlords and sellers in Cornwall must ensure their properties have a valid EPC when engaging in property transactions.
  2. Attracting Tenants and Buyers: A higher EPC rating can be a strong selling point, making a property more attractive to potential tenants or buyers who are increasingly environmentally conscious.
  3. Access to Government Grants and Schemes: Homeowners in Cornwall can access various grants and schemes for energy-efficient upgrades, often contingent on the property’s EPC rating.
  4. Preserving Cornwall’s Heritage: For a county rich in history and natural beauty, maintaining energy efficiency is crucial in preserving its heritage buildings and landscapes in a sustainable way.
It is worth checking first — you can check an EPC certificate for any Cornwall property and see when it runs out.

EPC data for Cornwall

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

11,792EPCs reach their 10-year expiry in the next 12 months
Band CThe most common rating, on 35% of certificates
61%Rated D or below, against 46% nationally
£1,174Average 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 Cornwall rates

Share of the 75,140 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

62% of the certificates lodged here are for houses. The average floor area is 90.5m², roughly 5m² larger than the England and Wales average. Estimated heating costs average £1,174 a year, £235 a year above the national figure. 26% of certificates were lodged for rented homes.

Radon in Cornwall

Cornwall sits in a radon Affected Area. The UKHSA and British Geological Survey put the 1km square covering the town centre in a band where more than 30 in 100 homes are estimated to be at or above the radon action level of 200 becquerels per cubic metre. Radon is not measured during an EPC survey and does not affect the rating, but if you are buying, selling or improving a home here it is worth a test kit, and worth knowing before you seal a property up: draught-proofing and insulation work can raise indoor radon if ventilation is reduced. 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 Cornwall

An EPC around here generally costs between £65 and £160, 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.

ecmk
Elmhurst
Stroma

What to expect when a Domestic Energy Assessor comes to your property

Every Domestic Energy Assessor / DEA will have their own order and format of carrying out the EPC depending on the software that they use and their personal preference to efficiency.

Read More

Frequently Asked Questions

Need your EPC questions answered?

View FAQs