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Energy efficiency is one of the most significant areas of building regulations development in recent years, and Part L – which covers the conservation of fuel and power – has been substantially updated to reflect the UK’s commitment to reducing carbon emissions from buildings. For homeowners planning a house extension, Part L has some very practical implications: it governs the insulation standards your extension must achieve, sets limits on how much glazing you can include, and in some cases requires…

Ventilation is one of those aspects of building design that is easy to overlook – it is not as visible as the structure or as dramatic as a glazed roof, but it matters enormously to the health and comfort of the people who will live in the space. Part F of the Building Regulations sets out the minimum ventilation requirements for dwellings, and the detail it contains is considerably more extensive than many homeowners expect. If you are planning a…

Sound insulation is not the first thing most homeowners think about when planning a house extension – but it is something that building regulations address directly, and in certain circumstances it can have a real impact on how your extension needs to be designed and built. Part E of the Building Regulations covers resistance to the passage of sound, and while it is most closely associated with new-build properties and flats, it also applies to some house extension scenarios that…

Every house extension involves electrical work. Even a straightforward single-storey rear extension will typically need new lighting, power sockets, and potentially connections to the kitchen or heating system. Part P of the Building Regulations governs electrical safety in dwellings, and it applies to all new electrical installations and significant alterations to existing ones – including those carried out as part of an extension. For most homeowners, Part P works in the background: a competent electrician handles the work, self-certifies it…

When it comes to obtaining building regulations approval for a house extension, most homeowners assume there is only one process to go through. In fact, there are two main routes available, and choosing the right one can have a significant impact on how smoothly your project runs. The Full Plans route and the Building Notice route work differently, offer different levels of upfront certainty, and suit different types of project. At Simply Extend, we advise every client on which route…

Fire safety is not a subject that most homeowners spend much time thinking about when planning a house extension – but it is one that building regulations take very seriously. Part B of the Building Regulations sets out the requirements for fire safety in buildings, and while a straightforward single-storey rear extension may involve relatively limited fire safety considerations, there are several common scenarios where Part B becomes a significant factor in how your extension needs to be designed. At…

Of all the building regulations that apply to a house extension, Part A is usually the one that causes the most anxiety. The idea of altering the structure of your home – removing walls, inserting steel beams, digging new foundations – can feel daunting, particularly if you have never been through the process before. Understanding what Part A actually requires, and what it means for your project in practice, goes a long way to demystifying what can otherwise feel like…