Expert SAP Assessment Services for New Builds and Extensions
If you are building a new home, conversion, or extension, you may require SAP Calculations (Standard Assessment Procedure) to demonstrate compliance with Building Regulations Part L.
At Barlings KWA Ltd, we provide accurate and reliable SAP Assessments, helping builders, developers and homeowners obtain the documentation required for Building Control approval.
We aim to make the process straightforward and efficient, providing clear advice and quick turnaround times so your project can progress smoothly.
Email: [email protected] or [email protected]

New Build Assessment
Conversion Assessment
Excess Glazing Calculation
Fast Turnaround
What Are SAP Calculations?
SAP (Standard Assessment Procedure) is the method used by the UK Government to assess the energy performance of residential buildings.
SAP Calculations measure how efficiently a property uses energy for:
- Heating
- Hot water
- Ventilation
- Lighting
The calculation considers factors such as:
- Insulation levels
- Cold Bridging
- Window performance
- Air tightness
- Renewable technologies
The results confirm whether the building meets the energy efficiency requirements of Building Regulations Part L.
When Are SAP Assessments Required?
SAP Calculations are typically required for:
- New build homes
- Property conversions
- New dwellings created through change of use
- Extensions in some circumstances
FAQs
- Do I need a SAP assessment: If your building a new dwelling you will need one
- Do you need a full specification: No, we can use our extensive experience to suggest solutions that you can work with as a starting point
- When should I have the SAP carried out: The SAP assessment should be carried out as early as possible in the design process
- Can Barlings KWA Ltd produce the As-Built SAP & EPC: Yes
- Do you need a full set of drawings: Yes we need drawings to work from
What our clients say
We have recommended Barlings KWA to many of our clients for their air testing and energy assessment services. William and Kerry are extremely helpful and always deliver the work accurately and on time
Joe Campion
Our SAP Assessment Service
At Barlings, we provide a comprehensive SAP calculation service to help ensure your project meets Building Regulations requirements.
Our service includes:
- Design stage SAP calculations
- Advice to help achieve compliance before construction
- As-built SAP calculations
- Production of EPC certificates for new dwellings
- Clear reports suitable for Building Control
We work with architects, builders, developers and homeowners to ensure projects meet the required energy performance standards.
As-Built SAP Calculations & EPC Certificates
Once the property has been constructed, as-built SAP calculations are completed using the final construction details.
These calculations confirm that the building has been constructed in accordance with the approved design. Following completion of the final SAP assessment, we produce
- Energy Performance Certificate (EPC)
- Compliance reports for Building Control
These documents are required for Building Regulations sign-off and property completion.
Why choose Barlings KWA Ltd?
- Experienced in Building Regulations compliance
- Reliable and professional service
- Clear reports suitable for Building Control
- Practical advice to help projects meet Part L requirements
- Local Lincolnshire based service
Recent Projects




We understand the requirements of construction projects and aim to provide a reliable and efficient service throughout the process.
More client feedback
“Always happy to answer any queries we have; the service and information they provide is excellent.”
— Kirsty Uttley
“A fantastic, professional company to work with. Great communication and turnaround time.”
— Chris Henderson
What we need to quote
- Architectural Drawings
- Number of units
- A brief specification
- Address of the project
Get a Quote for SAP Calculations
If you require SAP Calculations or Energy Assessments for your project, we would be happy to help.
Please contact us to discuss your project or request a quote.
Email: [email protected] or [email protected]