If you’re working on a new build, conversion, or significant renovation, you may have come across the term SAP Assessor – but what exactly do they do, and why are they essential for your project? In this blog, we’ll break down the role of a SAP Assessor, why you need one, and how the assessment process works.
In This Blog, You’ll Learn:
- What a SAP assessor does
- When you need SAP calculations
- How a SAP assessor calculates energy performance
- How to choose a qualified assessor
- How to book a SAP assessment
Understanding the Role of a SAP Assessor
A SAP assessor, also known as an on construction domestic energy assessor (OCDEA). is a qualified professional responsible for carrying out Standard Assessment Procedure (SAP) calculations, which are essential for ensuring new-build homes and conversions comply with energy efficiency regulations. They are also known as an on construction domestic energy assessor (OCDEA).
These assessments are legally required for new dwellings in the UK and help determine a property’s energy performance and compliance with Part L of the Building Regulations.
As an SAP Assessor, I help shape sustainable homes, reduce carbon footprints, and create a greener future – one assessment at a time. All while navigating the complexities of renewable energy systems and low-carbon heating, which don’t always align with compliance requirements and EPC expectations.
Richard Millard, Senior Sustainability Consultant at Building Energy Experts.
Why Do You Need a SAP Assessor?
If you are constructing a new home, converting a building into residential use, or making significant changes to an existing dwelling, you are required to provide SAP calculations to demonstrate compliance with energy efficiency standards. A SAP Assessor will:
- Assess the building’s design using approved software to model energy performance.
- Ensure compliance with Building Regulations Part L before construction begins and provide compliance reports, such as BREL/BRWL (short for Building Regulations England Part L, or Building Regulations Wales Part L).
- Advise on energy-efficient improvements to help meet compliance if the initial assessment falls short.
- Provide an EPC (Energy Performance Certificate) upon completion.
How are the SAP Calculations Conducted?
A SAP assessor uses architectural plans, insulation details, heating specifications, and ventilation systems to model a home’s predicted energy performance. The process includes:
- Reviewing design specifications and inputting accurate details into SAP software.
- Running calculations to determine energy demand, CO₂ emissions and expected energy costs.
- Providing guidance on modifications if the property does not initially meet compliance standards.
- Issuing a final compliance report and an EPC upon completion of the build.
How to Find a Qualified SAP Assessor
SAP calculations must be conducted by an accredited professional registered with recognised bodies such as Elmhurst Energy. When choosing a SAP Assessor, consider:
- Experience with similar projects (new builds, conversions, extensions).
- Accreditation with an official SAP certification body.
- Expertise in providing practical energy efficiency advice beyond just compliance.
Beyond Compliance: Our Expert Approach
Our SAP assessors bring a unique level of attention to detail and a client-focused approach to every project. We don’t just tick boxes – we help you optimise their building’s energy performance for long-term efficiency and comfort.
Why Choose Us?
- Thorough Analysis. We take the time to understand every aspect of your building, from its construction to its energy systems, ensuring a comprehensive assessment.
- Advanced Testing. Our team offer air tightness testing and thermal imaging, providing a holistic view of your building’s energy efficiency alongside your SAP.
- Expert Advice. Beyond providing compliance reports, we offer actionable recommendations to improve energy efficiency, lower costs, and enhance occupant comfort.
- Dedicated Support. We collaborate closely with architects, developers, and homeowners, ensuring the highest standards of compliance and performance at every stage of your project.
What’s Next?
Need a SAP Assessor for your project? Our accredited team is here to guide you through the process, ensuring compliance and energy efficiency from the start. Contact us today to discuss your requirements and book your SAP calculation.
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