If you own a property in London, whether it’s a home, rental property, office, shop, or commercial building, understanding the validity of your Energy Performance Certificate (EPC) is essential. One of the most common questions property owners ask is: How long does an EPC last, and when should I renew it?
An EPC is an important document that measures the energy efficiency of a property and is often required when selling, renting, or leasing a building. While EPCs have a relatively long validity period, there are situations where obtaining a new certificate before expiry can be beneficial.
In this guide, we’ll explain how long EPCs last in London, when renewal is necessary, and why keeping your certificate up to date can help homeowners, landlords, and business owners.
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What Is an EPC?
An Energy Performance Certificate (EPC) is an official document that rates a property’s energy efficiency.
Each certificate provides:
- An energy rating from A to G
- Estimated energy costs
- Carbon emissions information
- Recommendations for improving efficiency
- Potential future energy rating
The EPC helps buyers, tenants, landlords, and businesses understand how efficiently a property uses energy.
How Long Does an EPC Last?
In England and Wales, both Domestic EPCs and Commercial EPCs are generally valid for:
10 Years
Once issued, the EPC can usually be used multiple times during that period for:
- Property sales
- Residential lettings
- Commercial leases
- Property marketing
For example:
- EPC issued in June 2026 = valid until June 2036
- EPC issued in January 2025 = valid until January 2035
As long as the certificate remains valid, it can generally continue to be used.
Does the 10-Year Rule Apply to Both Domestic and Commercial EPCs?
Yes.
Domestic EPCs
Used for:
- Houses
- Flats
- Apartments
- Bungalows
- Residential rental properties
Commercial EPCs
Used for:
- Offices
- Shops
- Warehouses
- Restaurants
- Hotels
- Industrial buildings
Both certificate types typically remain valid for 10 years.
When Should You Renew an EPC?
Although renewal is not mandatory until the EPC expires, there are several situations where obtaining a new certificate before the expiry date may be worthwhile.
1. Your EPC Has Expired
Once the 10-year validity period ends, the certificate can no longer be used for:
- Selling a property
- Renting a property
- Leasing commercial premises
If your EPC has expired, you’ll usually need a new assessment before marketing the property.
2. You’ve Made Energy-Efficiency Improvements
Many London property owners improve their buildings over time.
Examples include:
Residential Improvements
- Loft insulation
- Wall insulation
- Double glazing
- Solar panels
- Heat pumps
- New boilers
Commercial Improvements
- LED lighting upgrades
- HVAC replacements
- Solar PV systems
- Building management systems
- Improved insulation
If these upgrades were completed after the last EPC assessment, the certificate may no longer accurately reflect the property’s energy performance.
A new EPC can help showcase those improvements.
3. You’re Preparing to Sell a Property
Even if your EPC remains valid, obtaining a new certificate may be beneficial if:
- Significant upgrades have been completed
- Energy costs have become a buyer concern
- You want the property’s latest performance reflected
A higher EPC rating can help make a property more attractive to prospective buyers.
4. You’re Renting Out a Property
Landlords should regularly review EPC ratings to ensure compliance with current requirements.
A newer EPC may:
- Reflect recent improvements
- Demonstrate compliance
- Improve tenant appeal
- Support marketing efforts
5. You’re Leasing Commercial Premises
Commercial tenants increasingly consider:
- Energy costs
- Sustainability goals
- Building efficiency
An updated EPC can provide valuable information and help support leasing decisions.
How Can You Check If Your EPC Is Still Valid?
Before booking a new assessment, property owners should confirm:
- EPC issue date
- Expiry date
- Current rating
Many people discover they already have a valid EPC that can still be used.
However, if major improvements have been completed, updating the certificate may still be beneficial.
What Happens If You Use an Expired EPC?
An expired EPC cannot generally be relied upon when:
- Marketing a property for sale
- Advertising a rental property
- Leasing commercial premises
Obtaining a new EPC before the certificate expires can help avoid delays and compliance issues.
How Long Does an EPC Assessment Take?
The inspection process is usually straightforward.
Domestic EPC Assessment
Most residential assessments take:
20–60 minutes
depending on the size and layout of the property.
Commercial EPC Assessment
Commercial inspections may take longer depending on:
- Building size
- Number of floors
- HVAC systems
- Property complexity
What Does an EPC Assessor Check?
Assessors review features that influence energy efficiency.
Building Fabric
- Walls
- Roofs
- Floors
Insulation
- Loft insulation
- Wall insulation
- Floor insulation
Heating Systems
- Boilers
- Heat pumps
- Heating controls
Windows and Glazing
- Double glazing
- Triple glazing
Lighting
- Fixed lighting installations
- Energy-efficient fittings
Commercial assessments may also include:
- Ventilation systems
- Air conditioning
- Building management systems
Can a New EPC Improve Your Rating?
If you’ve completed energy-efficiency improvements, the answer is often yes.
Common upgrades that may positively affect EPC scores include:
Solar Panels
Generate renewable electricity and may improve energy performance.
Insulation Improvements
Reduce heat loss and improve efficiency.
Heating System Upgrades
Modern boilers and heat pumps often achieve better results.
LED Lighting
Lower energy consumption and support better ratings.
Smart Energy Controls
Reduce unnecessary energy usage.
A new EPC can help ensure these improvements are reflected in your property’s rating.
Why Keeping Your EPC Updated Matters
An up-to-date EPC offers several benefits.
Better Property Marketing
Higher ratings can be attractive to buyers and tenants.
Improved Buyer Confidence
Prospective purchasers can view current energy performance information.
Compliance
Helps ensure you meet legal requirements when selling or renting.
Accurate Energy Data
Reflects the property’s actual condition rather than outdated information.
Frequently Asked Questions
How long does an EPC last in London?
An EPC is generally valid for 10 years from the date it is issued.
Do I need a new EPC if mine is still valid?
Not necessarily, but a new EPC may be beneficial if you’ve completed energy-efficiency improvements.
Can I sell a property with an old EPC?
Yes, provided the EPC remains valid.
Should landlords renew EPCs before they expire?
Many landlords choose to renew after improvements or before re-letting a property.
Are Commercial EPCs valid for 10 years too?
Yes, Commercial EPCs are generally valid for 10 years.
Does installing solar panels justify a new EPC?
In many cases, yes, because renewable energy improvements may positively affect the rating.
Conclusion
An EPC in London is generally valid for 10 years, whether it’s for a residential home, rental property, office, shop, or other commercial building. However, waiting until the expiry date isn’t always the best approach. If you’ve upgraded insulation, installed solar panels, improved heating systems, or completed major renovations, obtaining a new EPC can help ensure your property’s energy performance is accurately reflected. Keeping your EPC up to date not only helps with compliance when selling or renting but can also improve your property’s appeal in an increasingly energy-conscious market. By understanding when to renew your EPC, you can make the most of your property’s energy efficiency and avoid unnecessary delays during future transactions.
EPCRate Contact Details
150–160 City Road
London, EC1V 2NX
020 3488 4142
info@epcrate.co.uk
