Understanding the Larger Home Extension Scheme for your plans

Understanding Permitted Development Rights for home extensions

If you’re considering extending your home, you may be pleased to know that the Government’s Larger Home Extension Scheme has been made permanent in England. This change to Permitted Development Rights means that some homeowners can now build more substantial single-storey rear extensions without needing full planning permission—an opportunity that can save both time and cost when planning your dream extension.

What are Permitted Development Rights?

Permitted Development Rights give homeowners the freedom to make certain improvements without the need for a full planning application. For extensions, this includes:

• Detached homes: Extensions up to 8 metres from the rear of the property (previously 4 metres).
• Other homes: Extensions up to 6 metres (previously 3 metres).

These rights do not apply in all circumstances—for example, properties in conservation areas, listed buildings, or homes where rights have already been used. This is where expert advice from a local architectural designer, such as Acre Design, becomes invaluable.

Key rules you’ll need to consider

To qualify under the scheme, your extension must meet certain criteria:

• It cannot exceed 4 metres in overall height (or 3 metres if within 2 metres of a boundary).
• You must not cover more than half the land around the original house (as it stood in 1948).
• Materials must be in keeping with your existing home.
• Verandas, balconies and chimneys are excluded.

If your property is in a protected area—such as a National Park, Area of Outstanding Natural Beauty, or a conservation area—your rights will be more limited.

The Neighbourhood Consultation Process

Under the Larger Home Extension Scheme, your local authority will consult your neighbours once plans are submitted. They have 21 days to raise objections. If no valid objections are received, and your proposal meets all conditions, you could be ready to start building within 42 days.

Why apply for a Lawful Development Certificate?

Even if your design qualifies under Permitted Development, it’s strongly recommended to apply for a Lawful Development Certificate. This provides formal confirmation that your extension is compliant—offering peace of mind for you, your builder, and any future buyers of your property.

Why work with Acre Design?

Navigating planning regulations can be complex. At Acre Design, we handle every aspect of the application process on your behalf, ensuring your design is compliant, beautifully considered, and practical for the way you live. We’ll guide you from concept to completion, so you can focus on enjoying your new space rather than worrying about paperwork.

Even where full planning permission isn’t required, detailed architectural plans are still essential. They reduce risk, avoid costly mistakes, and give your builder a clear roadmap to follow.

Book your free consultation today and let’s explore how the Larger Home Extension Scheme could benefit your project.

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