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SAP
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SAP Calculations

SAP (Standard Assessment Procedure) calculations

What are SAP calculations?


SAP (Standard Assessment Procedure) calculations are a legal requirement for all new residential buildings and most extensions in the UK. These assessments check your building’s energy efficiency against the standards set out in Part L of the Building Regulations. Without them, you cannot start work or complete your project, and you will not receive an Energy Performance Certificate (EPC), which is needed to sell or let your property.


Why are SAP calculations necessary?
A compliant SAP report proves that your design meets national energy efficiency standards. This helps you gain Building Control approval, avoid costly delays, and keep your project on schedule. Good SAP results can also make your property more attractive to buyers or tenants. For developers, architects, and builders, a quick, accurate SAP assessment saves time and money, reduces compliance risk, and protects your reputation. With changing energy standards and more scrutiny on building performance, reliable SAP calculations are vital for every residential project.


When do you need a SAP calculation?



  • Design stage: Before you start on site, you must submit a Design Stage SAP Calculation with your Building Regulations application.

  • As-built stage: At completion, an updated SAP Calculation and EPC must be provided to achieve Final Building Control approval.

Send us your project details and we’ll send a quote

Our SAP Calculation services

We provide a full SAP Calculation service for new builds, conversions, and extensions, including:

We assess your plans early and give practical guidance to help you achieve a pass at the first attempt, saving time and cost. Icon

Design review and compliance advice

We assess your plans early and give practical guidance to help you achieve a pass at the first attempt, saving time and cost.
We prepare detailed SAP Calculations needed for your Building Regulations submission, ensuring your design meets Part L requirements before work starts. Icon

Design Stage SAP Calculations

We prepare detailed SAP Calculations needed for your Building Regulations submission, ensuring your design meets Part L requirements before work starts.
After completion, we update the calculations and provide the required Energy Performance Certificate for Building Control approval. Icon

As-built SAP Calculations and EPCs

After completion, we update the calculations and provide the required Energy Performance Certificate for Building Control approval.
We advise on insulation, heating, glazing, ventilation, and renewables to improve your building’s performance and control costs. Icon

Targeted recommendations

We advise on insulation, heating, glazing, ventilation, and renewables to improve your building’s performance and control costs.
We deal directly with Building Control officers and Approved Inspectors to keep your project moving smoothly through approval. Icon

Coordination with Building Control

We deal directly with Building Control officers and Approved Inspectors to keep your project moving smoothly through approval.
We offer specialist SAP assessments for extensions with more glazing than standard rules permit, helping you achieve your design goals legally. Icon

SAP Calculations for extensions

We offer specialist SAP assessments for extensions with more glazing than standard rules permit, helping you achieve your design goals legally.
For urgent projects, we provide a 24-hour turnaround service on SAP Calculations (subject to availability and fee). Icon

Fast-track service

For urgent projects, we provide a 24-hour turnaround service on SAP Calculations (subject to availability and fee).
We answer follow-up queries and provide advice throughout your project, ensuring you meet compliance from start to finish. Icon

Ongoing support

We answer follow-up queries and provide advice throughout your project, ensuring you meet compliance from start to finish.
We assess your plans early and give practical guidance to help you achieve a pass at the first attempt, saving time and cost. Icon

Design review and compliance advice

We assess your plans early and give practical guidance to help you achieve a pass at the first attempt, saving time and cost.
We prepare detailed SAP Calculations needed for your Building Regulations submission, ensuring your design meets Part L requirements before work starts. Icon

Design Stage SAP Calculations

We prepare detailed SAP Calculations needed for your Building Regulations submission, ensuring your design meets Part L requirements before work starts.
After completion, we update the calculations and provide the required Energy Performance Certificate for Building Control approval. Icon

As-built SAP Calculations and EPCs

After completion, we update the calculations and provide the required Energy Performance Certificate for Building Control approval.
We advise on insulation, heating, glazing, ventilation, and renewables to improve your building’s performance and control costs. Icon

Targeted recommendations

We advise on insulation, heating, glazing, ventilation, and renewables to improve your building’s performance and control costs.
We deal directly with Building Control officers and Approved Inspectors to keep your project moving smoothly through approval. Icon

Coordination with Building Control

We deal directly with Building Control officers and Approved Inspectors to keep your project moving smoothly through approval.
We offer specialist SAP assessments for extensions with more glazing than standard rules permit, helping you achieve your design goals legally. Icon

SAP Calculations for extensions

We offer specialist SAP assessments for extensions with more glazing than standard rules permit, helping you achieve your design goals legally.
For urgent projects, we provide a 24-hour turnaround service on SAP Calculations (subject to availability and fee). Icon

Fast-track service

For urgent projects, we provide a 24-hour turnaround service on SAP Calculations (subject to availability and fee).
We answer follow-up queries and provide advice throughout your project, ensuring you meet compliance from start to finish. Icon

Ongoing support

We answer follow-up queries and provide advice throughout your project, ensuring you meet compliance from start to finish.

Our SAP Calculations process

01

Initial consultation
Send us your plans and specifications for review

02

Design stage calculations
We complete the Design Stage SAP and advise on any changes needed

03

Guidance and improvement
Our SAP assessor works with you to secure a pass

04

As-built assessment
On completion, we update calculations and provide the EPC

05

Submission and approval
All required documents are supplied to meet your deadlines, with our team available for follow-up queries
Why enevo for SAP Calculations? Image
Why enevo for SAP Calculations? Icon

SAP Calculations

Why enevo for SAP Calculations?

  • Over 30 years’ combined experience and more than 10,000 successful SAP assessments completed
  • 100% pass rate: We do not charge for failed SAP calculations and always help you achieve a pass
  • Cost-saving advice to help reduce build costs and meet compliance efficiently
  • Fast, reliable service, with urgent turnaround available
  • Trusted by developers, architects, and builders across the UK for accurate, efficient compliance

How can we help you
with your project?

Testimonial IconTrusted, Time And Time Again

5 Star Rating

Harry gave me excellent advice and clear understanding on what BREEAM means as well about the specific accredited assessing required by professionals like Harry.

Angela Singh

5 Star Rating

Very efficient and professional service. Cant recommend enevo enough, glad I chose them for my project.

William Brannon

5 Star Rating

Very impressive on all aspects of energy calcs. Responsive and cost competitive. Highly recommended

Nick Spencer

5 Star Rating

enevo are always helpful, friendly and efficient in carrying out SAP calculations for our clients.

Lizzie Hicks

5 Star Rating

Dan at enevo has completed for us SBEM Calculations and EPC Certificates for 6 commercial units on an industrial estate. The cost of the works was very competitive and the service we received was second to none. With very limited time to get these works completed Dan worked round the clock (and into his annual leave!!) to ensure that our completion date was achieved with very little notice. Would highly recommend!

Mollie Belton

5 Star Rating

We have always found enevo to provide an excellent service in the preparation of SAP Calculations and Assessments as well as EPC Certificates for projects that they have worked on for us. They are also reasonably priced so we would certainly recommend them to anyone looking for this type of service.

Martin Booker

5 Star Rating

Used enevo from start to completion of our recent project of 2No. new builds. Services included SAP/EPC and property air testing. Great service, understanding of requirements and cost. Person friendly company and good with communication.

Mark Radcliffe

5 Star Rating

Very efficient, personal, professional service, with a quick report turnaround. Highly recommended if you're a self-builder trying to navigate the complexities of the latest regulations.

Edward Broadhead

5 Star Rating

Always efficient and prompt service, enevo are an asset to my company, having used their services on multiple developments I wouldn't hesitate to recommend them.

Mac Chappell

5 Star Rating

Great service with a fast turnaround. Communication was excellent throughout. Richard the engineer was polite and professional. Will certainly be using enevo again.

ECO PROPERTY DEVELOPMENTS LTD

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SAP Calculations

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SAP Calculations

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