SAP Calculations for Conversions

If your project is a barn conversion, a single dwelling into flats or a change of use it is likely that Building Control will ask for Part L1b SAP Calculations.

IMG_5309These require that controlled fittings and building materials meet certain efficiency standards, which can sometimes be more stringent than the requirements for new builds.

We can help you overcome this hurdle easily and quickly.


How Does it Work?

We will undertake SAP calculations for conversions from plans and construction specifications and ensure that both new and existing features are up to task. This includes identifying where existing walls and floors can be left untouched or where new features such as heating and insulation might need extra considerations to achieve a pass.


Part L1b SAP Calculations – Our Speciality

Build Energy have extensive experience in dealing with Part L1b Regulations and can provide you with all the help you need. We’ve helped hundreds of homeowners all over the UK and it is extremely rare that we do not find a solution – without having to change your plans.

We can even deal with your Building Control Officer, understand what is required, and take care of everything – Easy!

Want to Discuss your Extension or Renovation Project?

Just give us a call on 01202 280062 or send us your enquiry - we’ll get straight back to you.


We have used the team at Build Energy to assist us with the complex calculations and testing required to meet current building regulations......we have found them to be a valuable one stop source for all projects - they are extremely professional, reliable and competitive with regard to cost......we would not hesitate to recommend their services

Nicholas Lavidge – Director, Refurbishment for London