Is an EPC rating mandatory?

Yes – it is required when a property is built, sold, or rented.

Can I rent out a property with a low rating?

No, properties with an F or G rating cannot be rented without exemption.

Do assessors damage my property?

Inspections are visual only and non-intrusive.

Yes, as long as it is still valid (within 10 years).

EPC Rating Guide | What It Is, How It’s Calculated & Improved

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Kim B.

Very good, kept me updated of arrival time on the day, polite, well presented, friendly and got the job done !

Kapila M.

Overall, very good. The only downside is that I had to change the report as it wasn't sent on the next working day as promised.

Denisse G.

Jonathan was great, he gave me a call to let me know his approximate time of arrival and he was there on time. He was very polite and did the EPC and left. Told me how long it would take for me to receive it and it was exactly what he said. Very reliable thank you

Alison C.

Assessor turned up as scheduled, was friendly and willing to explain the process being followed. Job done, assessment posted!

Yvette C.

Furqan was amazing. He was so informative, friendly and went way out of his way answering questions even in the evening. Brilliant young bloke with old school conscientious working ethics. Needs a pay raise.

Andrew M.

Abdullahi was great. Very polite and respectful. Worked efficiently and quickly so did not take up too much time or inconvenience my tenants. Certificates followed very quickly after the visit.

Sam R.

Really nice guy and very respectful of our house, happy to remove shoes etc. happy to explain detail around what he was doing. Would recommend!

Rhian M.

Nateverlal arrived early and completed everything swiftly. I received the report back on the same day. A very kind gentleman. Thank you so much for your excellent service.

Lorraine B.

Very patient, given my tenant was not there when he first arrived. Communicated with me throughout, providing additional information and photos as requested. Certificate provided promptly.

Kim K.

Muhammed has been very helpful. Talked through things and kept in touch and would definitely book him again for any future energy performance certificates

Susie S.

Tom is a polite, knowledgeable and experienced gentleman. He arrived informing me of the proceedure, and kept me informed throughout. Any questions were fully answered. I would highly recommend Tom for his professionalism and decent attitude.

Chi Ivan C.

Very professional and friendly service. Arrived on time, explained everything clearly, and completed the EPC assessment efficiently. Highly recommended.

Humairah M.

Neil was very professional very friendly explained everything was smiley and polite did his work well. Definitely would arrange again and recommend to others . Thank you

Steve S.

Although Richard couldn’t make the allotted time he kept he informed and did the job once we had agreed a later time. He has very professional and knowledgeable

Lauren D.

Hamza was great. Communicated through messages before and after appointment, was professional and friendly and explained when and how I would get my certificate for the EPC. Would definitely recommend.

John C.

Thank you Alex for the help and insight into energy efficiency whilst conducting my EPC. You provide a very professional service.

Sami R.

He was very professional and thorough. Went above and beyond - eg We had access issues and he was kind to agree to reschedule. Asked for additional documentations in order to make sure I got the best possible EPC score. Would recommend.

Saadat A.

Ade was great, really enthusiastic about his craft, punctual kept me informed and prompt with his report

Natalie B.

SI is a brilliant very professional man. I will definitely ask for him again. I can fully recommend SI to anyone a honest professional man.

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EPC Rating: Everything You Need to Know

An EPC rating (Energy Performance Certificate rating) shows how energy-efficient a property is, ranked from A (most efficient) to G (least efficient). In the UK, a valid EPC is legally required whenever a property is sold, rented, or newly built.

Beyond compliance, your EPC rating affects energy bills, property value, environmental impact, and whether you can legally let a property. Buyers and tenants increasingly use EPC ratings as a guide when making decisions.

In this guide, we explain what an EPC rating is, how it’s calculated, why it matters, and how you can improve it.

What Is an EPC Rating?

An EPC rating is a standardised way to measure and compare the energy efficiency of homes and commercial buildings.

Scale: Properties are graded from A (excellent) to G (very poor).
Average UK rating: Most homes fall around band D.
Certificate content: Current rating, potential rating, and upgrade suggestions.
Validity: Certificates last for 10 years.

Why Do You Need an EPC Rating?

Legal requirement – Required when selling, renting, or building.
Marketability – Higher ratings make properties more attractive.
Compliance – Properties rated F or G cannot be rented (MEES regulations).
Added value – Energy-efficient properties often sell faster and at better prices.
Environmental benefit – Better ratings mean lower carbon emissions.

How Is an EPC Rating Calculated?

Accredited assessors inspect your property and use government-approved software. Factors include:

Insulation and airtightness (walls, roof, floors, glazing)
Heating, cooling and ventilation systems
Lighting systems (LEDs, controls, sensors)
Hot water systems
Renewable technologies (solar, heat pumps)
Property age, size and construction type

The EPC Rating Check Process

Book an accredited assessor – Choose a qualified local professional.
On-site inspection – Non-intrusive survey of insulation, heating, and glazing.
Data analysis – Details are entered into official software.
Report issued – You receive your EPC certificate and recommendations.

Most domestic EPC assessments take 30–60 minutes.

Benefits of Having an EPC Rating

Lower energy bills
Higher property value
Improved comfort
Reduced CO2 emissions
Compliance with UK regulations

How to Improve Your EPC Rating

Upgrade insulation (walls, lofts, floors)
Install double/triple glazing
Replace old boiler or HVAC with efficient models
Switch to LED lighting and smart controls
Consider renewable energy (solar panels, heat pumps)
Keep records of upgrades for the assessor

EPC Costs and Validity

Cost: Domestic EPCs usually cost £60–£120; commercial properties may cost more.
Validity: Certificates last for 10 years but should be renewed after major upgrades.

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