In 2026, Energy Performance Certificates (EPCs) are no longer just a legal requirement—they’re a key tool for property valuation, compliance, energy efficiency planning, and cost management.
For property owners and landlords, the most common question is:
“What exactly does an EPC show, and how do I read it?”
This article explores a real EPC in detail, breaking down each section, what it measures, what it ignores, and how to use it to your advantage.
What Is an EPC?
A Domestic or Commercial EPC is a certificate that measures a building’s energy efficiency and carbon emissions, rating it from A (most efficient) to G (least efficient).
It includes:
Energy efficiency rating (A–G)
Environmental impact rating (CO₂ emissions per m²)
Estimated energy costs
Recommendations for improvement
Both domestic and commercial EPCs are valid for 10 years and are required when selling, letting, or building a property.
Learn more about accredited assessors here:
👉 About EPCrate
Key Sections of a Real EPC
Whether domestic or commercial, a real EPC contains several important sections:
1. Property Details
This section includes:
Property address and type
Construction year
Floor area
Number of rooms (domestic) or building use (commercial)
Why it matters: Provides context for energy use comparisons and helps assessors calculate accurate ratings.
2. Energy Efficiency Rating
The primary rating is shown as a colored scale from A (green) to G (red).
A–B: Highly efficient
C–D: Average efficiency
E–G: Low efficiency, requiring upgrades
Example:
3-bedroom house in London: C rating
Medium-sized office in Manchester: B rating
Tips for improvement: Upgrading insulation, heating controls, and lighting can increase your rating.
3. Environmental Impact (CO₂) Rating
This section measures the carbon emissions per m² per year, helping property owners understand environmental impact and compliance requirements.
Crucial for landlords under MEES regulations
Helps businesses meet ESG and sustainability targets
4. Estimated Energy Costs
EPCs provide predicted annual energy costs, based on standardized occupancy and usage patterns.
Domestic example: £1,200 per year
Commercial example: £8,500 per year
This allows owners and tenants to anticipate running costs and identify inefficiencies.
5. Recommendations for Improvement
A real EPC provides a list of practical steps to improve energy efficiency, such as:
Loft insulation or wall cavity insulation
LED lighting upgrades
Smart heating and zoning controls
Installing renewable energy systems (solar panels, heat pumps)
Tip: Prioritize improvements that increase your rating and reduce running costs simultaneously.
6. Assessor and Certification Details
The EPC includes:
Name and accreditation number of the assessor
Date of assessment
Certification body contact info
Ensures the certificate is legal, valid, and verifiable.
How EPC Ratings Are Calculated
Domestic EPCs
Based on SAP (Standard Assessment Procedure)
Considers insulation, heating system efficiency, lighting, and renewable systems
Non-intrusive survey of property — no drilling required
Commercial EPCs
Based on SBEM or DSM methodology
Factors include HVAC systems, lighting controls, building zoning, occupancy, and renewables
Larger and more complex buildings take longer to assess
Typical assessment times in 2026:
| Property Type | Time |
|---|---|
| Domestic flat | 20–40 min |
| Domestic house | 40–60 min |
| Commercial small unit | 1–2 hours |
| Commercial medium/large | 2–5 hours |
Book an assessment:
👉 EPC Booking
Why EPCs Are More Important in 2026
Legal Compliance: Landlords cannot rent F/G rated properties without exemptions
Property Value: Higher EPC ratings correlate with faster sales and better prices
Operational Costs: Efficient buildings save money on energy bills
ESG Compliance: Investors and tenants increasingly require proof of sustainability
Common Misconceptions About EPCs
Myth 1: “EPCs are optional.” — False. Legally required for sale, letting, or construction.
Myth 2: “EPC assessments are intrusive.” — False. Non-intrusive surveys.
Myth 3: “Upgrades aren’t reflected.” — False. Provide evidence for accurate ratings.
Viewing a Real EPC in Action
Domestic Example:
3-bedroom home in London
C-rated, loft insulation, LED lighting, modern boiler
Assessment: 45 min, certificate issued next day
Recommended upgrades: Smart heating controls, extra insulation
Commercial Example:
Medium office in Manchester
B-rated, LED lighting, rooftop solar
Assessment: 2.5 hours, certificate issued in 3 days
Recommended upgrades: HVAC zoning, building management system (BMS)
Viewing these examples helps property owners understand how ratings translate to real-world energy efficiency and costs.
How to Prepare Your Property for an EPC
Ensure all rooms are accessible
Provide manuals and system documentation
Highlight insulation, glazing, and renewable energy features
Clear clutter for quicker measurement
Proper preparation reduces assessment time and ensures accurate ratings.
Cost of a Real EPC in 2026
Domestic EPCs: £60–£180 depending on size and complexity
Commercial EPCs: £150–£1,000+ depending on building type
Full pricing:
👉 EPC Pricing
Benefits of Understanding a Real EPC
Legal protection against fines and non-compliance
Financial insight into running costs and improvements
Planning tool for energy upgrades and sustainability
Market advantage in attracting buyers or tenants
Contact EPCrate for professional, accredited assessments:
👉 EPC Services
👉 Contact EPCrate
Key Takeaways
EPCs provide energy efficiency, cost, and environmental insights
Both domestic and commercial certificates include ratings, costs, and improvement recommendations
Proper understanding allows property owners to save money, comply with law, and improve market value
Real examples illustrate how assessments work and how to read the certificate effectively
Those who ignore the shift will find EPCs becoming more expensive, more restrictive, and harder to fix later.
Address: 150–160 City Road, London, EC1V 2NX
Phone: 020 3488 4142
Email: info@epcrate.co.uk
