Air Tightness Testing: Impact on London Properties
9 February 2026
Air tightness testing explained for London homes: how it works, regulations, testing methods, compliance, cost, and benefits for property owners.
What is a Commercial EPC Certificate?
A Commercial Energy Performance Certificate (EPC) is a document that shows the energy efficiency of a building. It is similar to the labels you see on appliances, but for buildings. It is rated from A (most efficient) to G (least efficient), with A-rated buildings being the most energy efficient and therefore the cheapest to run.
This will allow consumers to get grants to make improvements recommended in the EPC certificate.
This helps improve the energy efficiency of your property, along with giving home-buyers a home energy rating.
Energy Performance Certificates (EPC) were introduced in England and Wales on 1 August 2007 to cut carbon emissions and tackle climate change and are being introduced all across Europe.
What Makes Us Leaders?
Whether you’re selling, buying, leasing, or renting out a property, keep in mind that an Energy Performance Certificate (EPC), including Commercial EPC for commercial properties, is a legal requirement. Covering the entirety of London, we guarantee you the lowest and most matchless prices in the market.
Complete EPC evaluates how energy efficient your property is. Our modern-day practices and innovative equipment are topped with our assessors’ experience, knowledge, and expertise in both residential and commercial assessments.
Thus, we are a leader in providing our customers with the most precise and completely qualified yet economical energy performance certificates (EPC) for both your commercial and domestic properties.
Why Choose Us?
Complete EPC assessors are adequately certified and hold insurance and disclosure checks. An EPC helps to reveal how much it will cost to heat and power property. Along with that, it includes recommendations of energy-efficient improvements, the cost of carrying them out, and the potential savings in pounds and pence that each would generate.
With Complete EPC, you are fully covered. We are proud of our exceptional professionalism and trusted service. Our competitive service is equally effective for estate agents, solicitors, landlords, and tenants.
The Commercial EPC is provided exclusively by qualified non-domestic assessors who are certified.
How important is a Commercial EPC?
An EPC is crucial if you wish to attract potential buyers. It helps inform people how energy efficient your property is.
Commercial Energy Performance Certificate (CPEC) has become a must for commercial premises.
Potential buyers and tenants are authorized to have an equal overview of how energy-efficient the building is, its energy use, and energy bills.
The EPC will tell sellers and landlords where there’s room for energy improvement as their properties are concerned.
A certificate is valid for around ten years, a compulsory qualification, and a beneficial means.
How long does an assessment take?
A commercial evaluation depends upon the dimension and intricacy of the project. Complete EPC aims to achieve a turnaround of between 2-3 working days. This goes from preparation to the Commercial Energy Performance Certificate generation.
At Complete EPC, we understand that at some point, the primary production of the CEPC and the certificate must be ready on time. We attempt to ensure the certificate is produced within the client’s asked for timescale in such circumstances.
Note: This certificate is valid for ten years or until changes occur.
Why is a Commercial EPC beneficial?
All private properties in England, Wales are legally required to have energy performance certificates (EPC).
Energy improvement measures can have significant savings, and they can stop energy costs from growing. It is why the EPC is necessary for commercial buildings.
Compare buildings’ energy efficiency and make their decisions after seeing the EPC.
Thanks to the Commercial EPC, the commercial property sector can now benefit from a noticeable, quantifiable, and necessary energy performance certificate and valid comparison of energy efficiency of several commercial properties.
These factors will lead to a change in those who wish to invest in commercial properties due to utility costs that service those buildings.
At Complete EPC, we employ our own assessors, who each hold all the required qualifications, experience, and accreditation. This also includes Insurance and Disclosure checks, to enable them to produce Commercial EPC’s.
Commercial EPC Survey
A Commercial Energy Performance Certificate survey, is a comprehensive assessment carried out on non-domestic properties to determine their energy efficiency.
This survey provides a rating on a scale from A to G, with A being the most energy efficient and G being the least. It evaluates various aspects such as insulation, heating systems, and lighting, providing valuable insights for property owners and potential buyers or tenants.
By obtaining a commercial EPC survey, businesses can identify areas for energy improvement and make informed decisions to reduce their energy consumption and carbon footprint
How Much Does It Cost?
The cost can vary depending on several factors such as the size, complexity, and location of the building. To get an accurate cost for your specific property, it’s best to contact a Complete EPC who can provide a tailored quote. Remember, investing in a commercial EPC is a valuable step towards understanding and improving the energy efficiency of your building, ultimately saving you money in the long run.
EPC Service
Our EPC service ensures a seamless and hassle-free process. Our team of certified assessors will conduct a thorough evaluation of your property, considering factors such as insulation, heating systems, and ventilation. The result is a detailed report that highlights the current energy performance of the property and provides recommendations on how to improve its efficiency.
Investing in an Energy Performance Certificate
Investing in an Energy Performance Certificate is a smart choice that benefits both you and the environment. It helps reduce energy consumption, lower utility bills, and contribute to the overall sustainability of our communities.
TIMELINE DATES FOR COMMERCIAL PROPERTY.
🟢1 April 2018 – Unlawful to grant new leases of commercial property with an EPC rating of below E (the minimum standard)
🟢1 April 2023 – Unlawful to “continue to let” commercial property with an EPC rating of below E (the minimum standard)
🟢1 April 2025 – Requirement to register a valid EPC for let, commercial property
🔴1 April 2027 – The minimum standard raised to EPC rating C (anticipated – TBC)
🔴1 April 2028 – Further requirement to register a valid EPC for let, commercial property (anticipated – TBC)
🔴1 April 2030 – The minimum standard raised to EPC rating B (anticipated – TBC)
Here are some helpful tips and advice
7 Essential Steps for a Property Energy Audit Checklist
8 February 2026
Learn the top 7 essential steps for a thorough property energy audit checklist. Boost energy efficiency, meet EPC regulations, and save costs in London.
7 Reasons to Upgrade Your EPC Rating as a Landlord
7 February 2026
Discover 7 essential reasons to upgrade EPC rating and learn how improving your property’s efficiency boosts value, saves money, and meets UK regulations.
Passive House Explained: Boosting London Property Value
6 February 2026
Passive house: definition, benefits for London property owners, core design features, UK cost, and EPC implications. Learn why it matters in 2026.
What Is Low Carbon Heating and Why It Matters
5 February 2026
Low carbon heating explained for London landlords: key technologies, benefits for EPC ratings, typical costs, and compliance with new UK regulations.
What Is a DEC Certificate – Why It Matters in London
4 February 2026
Learn what a DEC certificate is, who needs one in London, legal duties, renewal periods, cost, and how it differs from EPCs. Get compliance clarity.
Commercial EPC Quote