SAP (Standard Assessment Procedure)

SAP Calculations for Approved Document Part L Compliance

In almost two decades of business within sustainability consultancy, we have guided thousands of satisfied clients to Approved Document Part L compliance for their residential developments with our practical and cost-effective solutions.

We have the in-house expertise to guide a range of different client bases to achieve Approved Document Part L compliance for Planning and Building Regulations as well as Environmental Credits for BREEAM, covering both Design Stage and As Built stage in a timely and professional manner.  

What is SAP?

SAP (Standard Assessment Procedure) is a licensed assessment tool carried out by accredited energy assessors to provide EPC’s (Energy Performance Certificates) and further documentation required for your local building control body for the overall sign off of the process for new build dwellings, conversions to dwellings and extensions to existing dwellings.

SAP is used to calculate the Dwelling Emission Rate (DER) and the Dwelling Fabric Energy Efficiency (DFEE), both of which are benchmarked against the current standards set out in Approved Document Part L. To reach compliance those benchmarks need to be bettered or equalled. This results in an energy efficient home that will mean  lower bills for the homeowners.

Approved Document L: Volume 1 2021 saw the introduction of Dwelling Primary Energy Rating (DPER) which calculates the regulated energy use of the dwelling. Once again, this is benchmarked against standards set out in Approved Document Part L and to reach compliance those benchmarks need to be bettered or equalled.

Each new home built to this standard is a massive step towards the UK Government’s net zero target.

What is included within our services?

Accredited energy assessors 

All our consultants are Accredited Energy Assessors and can provide all final documentation required for final sign off and lodge EPC’s.

U-value calculations 

U-value calculations for each external elements (Walls, Floors & Roofs) will be included with no additional fee.

Experienced Consultancy

At Encon Associates we have a combined experience of over 100 years in building consultancy. We are also multi-disciplinary and have helped our clients overcome various compliance issues over many years. 

Cost-effective solutions 

If appointed at design stage, we can save you money by adjusting the build specification for a more cost-effective approach, whilst still ensuring Approved Document Part L compliance.

Ongoing Technical Support  

No development is ever straightforward and bumps in the road are likely to occur. However , we are always available to provide technical support to all our clients in order to help them achieve compliance.

SAP Calculations for Environmental Credits

If your project is working towards an environmental assessment, our SAP Calculations service can help achieve the following credits:

BREEAM 2018 BREEAM 2014 BREEAM 2011 BREEAM 2008 Code for Sustainable Homes November 2010

SAP Calculations for Planning

Our SAP Calculations service can help mitigate planning applications or conditions of planning consent:

Customer Testimonials

"The scope of skills/services that Encon provide are fantastic, kept all neatly under one roof, which is a bonus when coordinating our developments - we would highly recommend Encon to any size organisations as they have the capability to work small or large scale."


Melissa Fennell
Fenwood Estates Limited

Contact us for a quote

We are always happy to offer impartial advice and guidance - if you have a requirement for one of our services and would like to discuss, or to request a quote, please contact us below.