An Energy Performance Certificate, or EPC, is one of the most useful documents renters can check before agreeing to rent a property. It gives an indication of a home’s energy efficiency, likely running costs, and how easy it may be to keep warm. With planned changes to EPC assessments, renters may soon get clearer information…
SAP calculations are an important part of the building control process for new homes, conversions and some residential projects. They show whether a property meets Building Regulations Part L for energy performance, carbon emissions and energy efficiency. The main reasons SAP calculations fail include poor U-values, inefficient heating systems, weak air tightness, poor thermal bridging, unsuitable ventilation, and…
A non-domestic EPC assessment is a key requirement for anyone involved in selling, renting, or developing commercial properties in the UK. Whether you own a commercial building, manage a business property, or are preparing to let space in the private rented sector, understanding your energy performance certificate (EPC) is essential. An energy performance certificate provides…
Energy rules for commercial buildings are becoming stricter. From 2030, it’s expected that updated EPC requirements will raise the minimum energy efficiency standards (MEES), meaning many commercial properties will need to meet higher performance levels than before. If you’re a landlord, property manager, investor, or responsible for commercial premises, it’s clear that buildings must become…
If you’re a private landlord in England or Wales, understanding your legal responsibilities around EPCs forrental properties is essential. Energy regulations have tightened in recent years, and with further updates expected beyond 2026, staying compliant is critical to protecting your rental income. This fully updated guide explains what an EPC is, the current Minimum Energy…
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…
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…
Windows and doors do far more than bring light and access to your home, they play a major role in how well it retains heat. Their performance is measured by one key metric: the U-Value. A U-Value shows the rate of heat transfer through a material, measured per square metre for every degree of temperature…
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…
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…
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