Domestic & Commercial Energy Performance Certificates (EPC) Porth
We provide EPCs in Porth and across Rhondda Cynon Taf 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 Porth, the most common domestic EPC band is D, with 49% of homes rated C or above and an average energy-efficiency score of 68 out of 100. Commercial properties in the wider Rhondda Cynon Taf area have an average rating of C 72 (UK average D 77).
There is real room to improve: the average Porth home could raise its score by about 16 points, and 74% could improve by 10 points or more. The average home here emits roughly 3.2 tonnes of CO₂ a year.
Around 47% of homes in Porth are owner-occupied and 21% are privately rented. About 81% are houses and 15% flats, and 92% are heated by mains gas. On the fabric, 55% have insulated cavity walls and 95% are fully double-glazed or better.
Letting a property in Porth? About 65% 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 0.5% 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 10% of certificates in Porth, 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 5,680 currently valid domestic EPCs for Porth 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 Porth: 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 Porth compares in our full domestic and commercial EPC statistics for England and Wales.
EPC services in nearby areas
What EPCs in Porth most often recommend
Every EPC lists the improvements that would raise the home's rating. Across 5,680 valid certificates in Porth, the typical home is rated D 68 and could reach B 84 with the measures its EPC recommends. The most frequent are:
- Solar photovoltaic panels, 2.5 kWp — recommended on 77% of Porth EPCs, typically £3,500 - £5,500.
- Solar water heating — recommended on 66% of Porth EPCs, typically £4,000 - £6,000.
- Floor insulation (solid floor) — recommended on 56% of Porth EPCs, typically £4,000 - £6,000.
- 50 mm internal or external wall insulation — recommended on 40% of Porth EPCs, typically £4,000 - £14,000.
- Low energy lighting for all fixed outlets — recommended on 33% of Porth EPCs, typically £15.
- Cavity wall insulation — recommended on 25% of Porth EPCs, typically £500 - £1,500.
For landlords the list matters: 65% of privately rented homes in Porth 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 Porth and the certificate will list the measures for your home.
For properties for which we have produced an EPC in Porth, 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.