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Building Compliance

SAP Calculations & Assessments

SAP Calculations in accordance with Building Regulations part L1A (new builds) and part L1B (extensions and conversions). All SAP Calculations are comprehensive and include U-values, Reports for Building Control, and advice and specifications to ensure compliance. Vision Energy will work with each project from the design stage all the way to completion to ensure the project runs as smoothly as possible.

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Enquire about this service

✉ info@vision-energy.co.uk ☎ 01625 315040
Building Compliance Full design stage and as-built SAP calculations EPC certificates for new build and conversion projects U-value calculations for all construction elements Building Control compliance reports

SAP Calculations & EPC Certificates

Vision Energy will work with you on your building project from design stage all the way through to completion, from single dwellings to developments with 100+ dwellings. We strive to ensure that all SAP calculations are completed to achieve compliance as well as providing cost-effective and feasible solutions to ensure the smooth delivery of your project.

Elements Assessed During SAP Calculations

When SAP Calculations are carried out on any dwelling, a number of factors are used to calculate the energy cost and CO₂ emissions:

  • Thermal efficiency of walls, floors and roof elements
  • Thermal efficiency of glazing and doors
  • Boiler efficiency and heating system type
  • Hot water system and cylinder insulation
  • Renewable and low-carbon technologies (solar PV, heat pumps)
  • Air permeability and ventilation strategy
  • Lighting and internal heat gains

Our SAP Assessment Service Includes

  • Dedicated energy assessor — ensuring an efficient, friendly service throughout your project
  • Free U-values for wall, floor and roof elements
  • Commitment to achieve compliance without costly or unnecessary solutions
  • Fast turnaround available to meet your deadlines
  • Design stage through to as-built sign-off

How our SAP assessments work throughout the design and build process?

Vision Energy recommend carrying out your SAP calculations at a design stage, however if your dwelling/s is already complete don’t worry, we can still carry out your SAP calculations at an ‘as-built’ stage, below outlines the step by step process Vision Energy will take to ensure compliance to Building Regulations Part L1a & L1B,​

Initial Design Review – Vision will review the plans and information provided within architectural drawings or specifications

Design Stage SAP Calculations – Design calculations will be carried out to review the compliance to all elements in Building Regulations

Design Review & Alterations – Were required, Vision will advise on any alterations that are required to the design of the dwelling/s to comply with Building Regulations Part L1a, ensuring that the design alterations are cost effective and feasible on site,​

Design SAP Calculations & Predicted EPC – Vision will issue the design stage calculations and predicted EPC for submission to Building control/Local Authority​

As-Built SAP Calculations Review – Once the construction of the dwelling/s is nearing completion, Vision Energy will review the construction details compared to the design SAP Calculations to ensure the dwelling/s have been built to the specification, If any alterations have been made, Vision will rerun the calculations and review compliance​

As Built SAP Calculations & EPC – Once the review has been complete and confirmed, Vision Energy will issue and lodge the As-built SAP Calculations & EPC for submission to Building Control/ Local Authority