historic listed building in london

2 Essential Regulations for Historic Building EPC Assessments

Historic buildings are a valuable part of the property market, but meeting energy efficiency and energy performance requirements can be complex, particularly where heritage protections and planning controls apply. This guide explains two core regulations that govern historic building EPC assessments, then covers the key laws, exemptions, and practical considerations that affect which energy efficiency…

home energy efficiency rating graphic projecting from hands

HEM vs. SAP: What’s Changing, When It’s Changing, and What It Will Cost

Energy regulation in the UK is entering a period of transition for new homes. The long-established Standard Assessment Procedure (SAP), which assesses residential properties and produces Energy Performance Certificates (EPCs), is planned to be phased out and replaced by the Home Energy Model (HEM), a new methodology that the government intends to provide a more…

SAP Calculations and U-Values: How They Work Together for Compliance

Energy efficiency is at the heart of modern building design. In the UK, every new build, conversion, or extension must meet strict standards under the Building Regulations, and two of the most important metrics in achieving compliance are SAP Calculations and U-Values. While both are used to assess a building’s thermal performance, they measure different…

SAP 10 vs. SAP 2012: Key Differences Developers Must Know

For over a decade, SAP (Standard Assessment Procedure) 2012 was the standard framework for assessing the energy performance of dwellings across the UK. Every developer, architect, and builder relied on it when working to comply with Building Regulations Part L and to secure a valid Energy Performance Certificate (EPC). The energy landscape, however, underwent significant…

Build Energy Efficiently: New Construction Materials Guide

As UK energy standards tighten, the construction industry faces growing pressure to deliver energy-efficient houses and sustainable buildings that meet modern regulations. One of the most effective ways to achieve this is by using eco-friendly construction materials that reduce energy consumption, cut carbon emissions, and improve long-term performance. By making the right material choices, developers…

When Is an EPC Not Required? A Guide for Commercial and Residential Property Owners

In the UK, Energy Performance Certificates (EPCs) are a legal requirement in most situations when you sell, let, or construct a property. They give buyers, tenants, and landlords an energy efficiency rating, alongside a recommendation report detailing possible energy efficiency measures to help reduce energy bills and improve comfort. However, there are certain circumstances where…