Domestic & Commercial Energy Performance Certificates (EPC) Corby
We provide EPCs in Corby and across North Northamptonshire for both Domestic and Commercial properties. A valid EPC is required to be in place before the sale or rental of your property. The EPC survey itself is entirely non intrusive and won't damage the building in any way. Once the survey is complete the EPC report will be produced, which gives the building an Energy Performance Rating rating on a scale from A to G.
For most rental properties an EPC rating of E or better is required, in compliance with the Minimum Energy Efficiency (MEES) legislations of 2018. For properties for sale, MEES legislation does not yet apply, however an ever increasing number of financial institutions require properties to demonstrate they would be MEES compliant before agreeing mortgage funding.
Across Corby, the most common domestic EPC band is C, with 71% of homes rated C or above and an average energy-efficiency score of 73 out of 100. Commercial properties in the wider North Northamptonshire area have an average rating of C 73 (UK average D 77).
There is real room to improve: the average Corby home could raise its score by about 12 points, and 68% could improve by 10 points or more. The average home here emits roughly 2.8 tonnes of CO₂ a year.
Around 53% of homes in Corby are owner-occupied and 30% are privately rented. About 81% are houses and 13% flats, and 93% are heated by mains gas. On the fabric, 85% have insulated cavity walls and 98% are fully double-glazed or better.
Letting a property in Corby? About 34% of privately rented homes here are rated below an EPC C, the level the government has proposed as a future minimum for rented homes, and 0.7% are rated F or G, below the EPC E minimum needed to let a home today. We can carry out the EPC and advise on the most cost-effective way to improve the rating.
New-build makes up about 23% of certificates in Corby, averaging a band B. New builds need a SAP calculation and an as-built EPC, both of which we provide.
These figures are from analysis of the 15,465 currently valid domestic EPCs for Corby in the publicly available government data set, covering certificates lodged in the ten years to 2026-08-16 (one per property, its latest). Values are medians/averages from the source data.
EPC statistics on this page are derived from the Ministry of Housing, Communities & Local Government (MHCLG) Energy Performance of Buildings Data, licensed under the Open Government Licence v3.0.
Easy EPC also provides these property services in Corby: Domestic EPC, Commercial EPC, EICR electrical reports, Gas Safety Certificates, Fire Risk Assessments, SAP calculations, SBEM and BRUKL reports, Display Energy Certificates, asbestos surveys, air tightness testing, sound insulation testing and legionella risk assessments.
See how Corby compares in our full domestic and commercial EPC statistics for England and Wales.
EPC services in nearby areas
EPC ratings by postcode area in Corby
Within Corby, NN18 has the highest share of homes rated C or above (73%) and NN17 the lowest (69%). Older housing usually explains the gap, and it is where an EPC most often finds cheap improvements.
| Postcode area | Homes assessed | Most common band | Rated C or above |
|---|---|---|---|
| NN17 | 8,259 | B | 69% |
| NN18 | 7,583 | C | 73% |
Currently valid domestic EPCs, one per property, lodged in the ten years to 2026-08-16. Postcode areas with fewer than 100 assessed homes are not shown.
What EPCs in Corby most often recommend
Every EPC lists the improvements that would raise the home's rating. Across 15,465 valid certificates in Corby, the typical home is rated C 73 and could reach B 86 with the measures its EPC recommends. The most frequent are:
- Solar photovoltaic panels, 2.5 kWp — recommended on 78% of Corby EPCs, typically £3,500 - £5,500.
- Solar water heating — recommended on 71% of Corby EPCs, typically £4,000 - £6,000.
- Floor insulation (solid floor) — recommended on 39% of Corby EPCs, typically £4,000 - £6,000.
- Low energy lighting for all fixed outlets — recommended on 28% of Corby EPCs, typically £15.
- Replace boiler with new condensing boiler — recommended on 10% of Corby EPCs, typically £2,200 - £3,000.
- Cavity wall insulation — recommended on 9% of Corby EPCs, typically £500 - £1,500.
For landlords the list matters: 34% of privately rented homes in Corby are currently below band C, the minimum for new tenancies from 1 October 2030. Your EPC's own recommendations are the starting point for the plan.
Cost ranges are the register's indicative figures, not quotes. Book an EPC in Corby and the certificate will list the measures for your home.
For properties for which we have produced an EPC in Corby, if shown not to meet MEES targets, we can then provide tailored advice on the least disruptive and most cost effective ways to improve the building to achieve the targeted rating. We are happy to provide more in depth MEES advice, including on MEES Exemptions so please Contact Us for more information.
Wondering what actually moves a home's rating? Our EPC ratings explained guide includes an interactive explorer built on real RdSAP calculations: pick a home like yours and watch the certificate respond. Or answer three questions on our EPC calculator for an instant estimate.