If you’re thinking about adding decking to your home or holiday park property, one of the first questions you’ll probably ask yourself is whether you need decking planning permission before you get started. It’s a sensible thing to check – getting it wrong can be expensive and time-consuming to fix. The good news is that most decking projects in the UK don’t require planning permission at all. But there are rules, and it pays to know them before you lay a single board.
This guide walks you through everything you need to know, clearly and simply.
What Is Planning Permission?
Planning permission is the formal approval you may need from your local authority before making certain changes to your property. Its purpose is to make sure that developments – whether they’re extensions, outbuildings, or outdoor structures – fit in with the surrounding area, don’t negatively affect neighbouring properties, and meet relevant standards.
It’s worth knowing that planning permission and building regulations are two different things, and both can apply to a decking project depending on its size and height. Planning permission is about whether the structure is allowed; building regulations are about whether it’s been built safely to the right standards.
Do You Need Planning Permission for Decking?
In most cases, no – you don’t need planning permission for decking. Most domestic decking falls under what’s known as Permitted Development Rights (PDR). These are pre-approved rules from the government that allow homeowners to carry out certain improvements without going through the full planning process.
For your decking to qualify as permitted development, it needs to meet all of the following conditions:
- The deck must be no more than 30cm above ground level at any point
- Together with any other outbuildings or extensions on the property, the decking must not cover more than 50% of the total garden area
- The decking must not be positioned in front of the principal elevation of the house (i.e. the front of the property)
If your planned deck meets all three of those criteria, you’re almost certainly fine to go ahead without applying for planning permission for decking. If any of those conditions aren’t met, you’ll need to look into it further.
When Might You Need Planning Permission?
There are some scenarios where planning permission is more likely to be required. These include:
- Raised decking above 30cm – If your garden slopes, or you want a raised platform for a better view or more usable outdoor space, any part of the deck that sits higher than 30cm from the ground will take it outside of permitted development rules.
- Large deck areas – If the deck, combined with any existing outbuildings or extensions, would cover more than half of your garden, you’ll need to apply.
- Listed buildings and protected areas – Decking is generally not permitted within the curtilage of a listed building, and stricter rules apply to properties in National Parks, Areas of Outstanding Natural Beauty, the Broads, and World Heritage Sites.
- Proximity to a motorway – If your property sits within 20 metres of a motorway, permitted development rights don’t apply in the same way.
- Impact on neighbours – If a raised deck would overlook neighbouring gardens or properties and significantly affect their privacy, a planning application could be refused on those grounds.
If you’re unsure about any of these points, the safest approach is always to contact your local planning authority (LPA) for advice before you start.
What About Building Regulations?
Even when planning permission isn’t needed, your decking may still need to comply with building regulations – particularly if it’s raised off the ground. A raised deck, for example, will typically need to have balustrades fitted if the surface is above a certain height, to prevent falls. The specific height thresholds and requirements can vary, so it’s worth checking with your local building control body (BCB) if you’re in any doubt.
The good news is that a reputable, experienced decking installer will already know what’s required and can handle building regulation compliance on your behalf as part of the project.
How to Apply for Planning Permission for Decking
If your project does need planning permission, the process is more straightforward than you might think. Most applications can be submitted online through the Planning Portal, or directly through your local authority’s website.
You’ll typically need to provide:
- Your full property address
- A site plan showing the proposed deck and its dimensions
- Details of how it might affect the surrounding area or neighbouring properties
Once submitted, your local authority will notify your immediate neighbours and assess the application. Standard decisions usually come back within eight weeks.
Tell Your Neighbours First
While there’s no legal requirement to inform your neighbours before applying, it’s generally good practice and can save a lot of headaches later. If a neighbour objects to a raised deck that overlooks their garden, that objection carries weight in the planning process. A quick conversation upfront goes a long way.
Holiday Park and Residential Park Home Decking
If you own a holiday home or residential park home, the rules work slightly differently. Planning permission for the park itself is usually held by the site operator rather than individual owners, so any decking work may need approval from the park management before it can go ahead. Always check your licence agreement and speak to your park operator before commissioning any work.
This is where working with a specialist who understands the holiday and residential park sector really matters.
Plan Your Deck with Confidence
Understanding decking planning permission before you start means you can move forward with your project confidently, without any nasty surprises down the line. For most people, permitted development rights cover everything they need – but it’s always worth doing your homework first.
At Mayfield, we’ve been designing and installing bespoke decking for holiday parks, residential parks and domestic properties across the UK for over 30 years. Our team knows the rules inside out and can guide you through the whole process, from initial design to completed installation. If you’re ready to start planning your new deck, get in touch with the Mayfield team today and we’ll help you get it right from day one.
Frequently Asked Questions
Can I build decking right up to my garden boundary?
Generally yes, but with caution. Permitted development rights don’t set a specific boundary distance for ground-level decking, but if your deck is raised above 30cm and sits close to a neighbouring boundary, your local planning authority may consider its impact on your neighbour’s privacy. If the deck could overlook their garden or property, that could be grounds for an objection or a requirement to apply for full planning permission. When in doubt, check with your local planning authority before you start.
Does replacing old decking need planning permission?
In most cases, replacing like-for-like decking doesn’t require planning permission, provided the new deck meets the same permitted development conditions as the original – no higher than 30cm above ground, covering no more than 50% of the garden, and not positioned in front of the principal elevation of the house. However, if you’re changing the size, height, or position of the deck as part of the replacement, the new structure will be assessed on its own merits, so it’s worth double-checking with your local authority if anything is significantly different.
What happens if I build decking without planning permission when I needed it?
Building decking without the required planning permission can lead to serious problems. Your local planning authority has the power to issue an enforcement notice requiring you to remove or alter the structure at your own cost. It can also cause complications when selling your home, as a buyer’s solicitor is likely to flag the lack of compliance, potentially delaying or even derailing a sale. If you’re not sure whether your project needs permission, always check first – it’s a much simpler process than dealing with enforcement action after the fact.
