If you’re a homeowner or landlord in London, understanding how your property’s Energy Performance Certificate (EPC) rating is calculated can help you improve energy efficiency and meet legal compliance. At the heart of the EPC calculation is something known as SAP – Standard Assessment Procedure. But what exactly is SAP, and how does it impact your EPC rating?
What Is SAP?
SAP (Standard Assessment Procedure) is the UK government’s approved method for assessing and comparing the energy and environmental performance of dwellings. Developed by the Building Research Establishment (BRE), SAP scores range from 1 (very poor) to 100+ (highly efficient). A higher SAP score results in a better EPC rating, typically ranging from A (most efficient) to G (least efficient).
How Does SAP Affect Your EPC Rating?
When one of our accredited energy assessors conducts your EPC assessment, they input your property details into SAP software. This includes:
Construction materials
Insulation levels
Heating system type and efficiency
Hot water system
Ventilation and airtightness
Lighting and renewable technologies
Each factor contributes to the property’s predicted energy use, and the SAP software then calculates a score, which determines your EPC rating.
✅ Need an EPC fast? Visit our Same-Day EPC page to book a certified assessor now.
Why SAP Matters for Property Owners
Whether you’re selling, renting, or improving your property, understanding SAP helps you make cost-effective upgrades. For example, replacing an old boiler or upgrading loft insulation can significantly increase your SAP score—translating into a higher EPC rating and potentially boosting your property value.
Work With a Certified EPC Provider
At Urgent EPC, our team of qualified and accredited EPC assessors uses the latest SAP software to ensure your certificate is accurate, fast, and compliant. We offer services across all London boroughs and Greater London.
📞 Call Us: +44 7741 812 864
📧 Email: info@samedayepc.co.uk
🌐 Contact Us to schedule your EPC assessment today.
Final Thoughts
SAP isn’t just a formula—it’s the backbone of your EPC rating. Knowing how it works can empower you to take smarter steps toward energy efficiency and compliance. For expert help or to book an EPC today, visit our About Us page to learn more.
