Expert Civil, Structural and Environmental Engineers in Colchester

Home Extensions, SAP Calculations and Part L Building Regulations. When completing a new extension on a dwelling Building Control should ask the homeowner to prove that the new extension complies with Part L of the Building Regulations. Even if an extension has been built years ago and the homeowner is now looking to sell the property, they are often asked by Solicitors to prove that they have received Building Control sign off and the property cannot be sold without it. Demonstrating to Building Control that your extension meets the requirements can be an onerous task if you are not familiar with the ins and outs of Building Regulations, Construction U-Value calculations, and the full SAP Assessment procedure. We are experts in all of this and have helped many homeowners who seemed stuck with an extension that they couldn’t prove to Building Control complied.