SAP Assessments

SAP assessments form a key part of any new build design process, and for many conversions and extensions too.

Our team of assessors will work with you to ensure that your build meets the SAP and Part L requirements – using the most cost effective solutions.

Whether you are designing a new build, conversion or extension – our job is to help you through the SAP assessment process quickly and effortlessly.

We work with our clients from very early in the design process to ensure that any issues are ironed out before they become a headache.

The latest Part L regulations provide further challenges to designers and builders alike. Building fabric is being driven to higher and higher performance, and new CO₂ emissions targets mean that new technologies and efficient, smart controls are now required for most homes.

SAP Assessment made easy….

• Everything you need – From Design PEA reports to EPC
• Guaranteed pass – We wont fail your design
• Experienced assessors to guide you through
• One price – no hidden extras
• 48 hour service if you need it fast
• Available as part of our New Build Compliance Pack
• Discounts for multiple units

What is a SAP Assessment?

SAP is the standard procedure for the energy assessment of dwellings, as set by government. A SAP assessment measures CO₂ emissions, energy costs and thermal performance of building elements.

If you are constructing a new dwelling you will be asked to provide a design stage SAP assessment with your building regulations application. You may also require them if you are extending or renovating a property, or instigating a change of use – for example creating flats from a single dwelling or a barn conversion.

Like some further reading…?

• What Are SAP Calculations?
• SAP – it’s all in the process!
• Need help with an Extension or Conversion?

Frequently Asked Questions

What is a SAP assessment?

A SAP (Standard Assessment Procedure) assessment is the government-approved method for calculating the energy performance and CO2 emissions of a new dwelling. It is required by Building Control for all new homes in England and Wales, and for many conversions and extensions.

When is a SAP assessment required?

A SAP assessment is required for all new dwellings, most residential conversions (barn conversions, flat conversions), and extensions where proposed glazing exceeds 25% of the new floor area. It is submitted to Building Control as part of the building regulations application.

What does a SAP assessment include?

A SAP assessment includes a design-stage Predicted Energy Assessment (PEA), confirmation of the compliant specification, and on completion an as-built On Construction Report and Energy Performance Certificate (EPC) lodged with the national register.

How quickly can Build Energy complete a SAP assessment?

Standard SAP assessments are typically completed within 2–5 working days of receiving drawings and specification. A 48-hour turnaround is available on request for urgent projects.

What is meant by a guaranteed pass?

Build Energy guarantees we will not submit a failing design to Building Control. If the initial assessment identifies a compliance issue, we work with the design team to find a cost-effective solution before submission – at no extra charge.