Do I Need Planning Permission for Decking in the UK?

If you’re planning a new deck, one of the first questions you may ask is whether planning permission is required. In many cases, decking can be installed without full planning permission, but it depends on the height, position and scale of the project.

This guide explains the basics of planning permission for decking in the UK, so you can start your project with more confidence.

Do You Need Planning Permission for Decking?

In many cases, decking falls under permitted development, which means you may not need planning permission. However, this depends on factors such as the height of the deck, how much of your garden it covers, and whether your property has any special restrictions.

When Planning Permission May Be Needed

You may need planning permission if your decking is raised significantly above ground level, if it takes up a large proportion of your outdoor space, or if your home is in a conservation area or another protected location.

If your deck affects neighbouring properties or changes the appearance of the building substantially, it is also worth checking with your local planning authority before work begins.

Why Deck Height Matters

One of the most important factors is height. Raised decking is more likely to require permission than a deck installed close to ground level. The higher the deck, the more likely it is to raise planning concerns around overlooking, privacy and visual impact.

Do Decking Rules Apply to Composite and Timber Decking?

Planning rules generally relate to the structure and impact of the deck rather than whether you choose composite or timber. Whether you install composite decking boards or timber decking, the same planning considerations usually apply.

How to Check Before You Build

If you’re unsure, the safest approach is to review the guidance from your local council and the national Planning Portal before starting your project. You can also speak to a professional installer if you want help assessing the layout and height of your proposed deck.

Find official guidance on the Planning Portal.

Planning a Decking Project the Right Way

Before building, it’s worth thinking about materials, layout, levels and long-term maintenance. Our decking project planning guide can help you get started.

What if I’m Still Unsure?

If you’re uncertain whether your decking project needs permission, it’s always better to check first. A quick conversation with your local authority can save time and prevent problems later on.

Get Started

Ready to plan your project? Order free decking samples, explore our composite decking range, or find an installer near you.