Planning to add a polycarbonate greenhouse to your garden? You’re not alone. More UK homeowners are turning to these energy-efficient, low-maintenance greenhouses for year-round growing. But there’s a common question that pops up:
Do you need polycarbonate greenhouse planning permission?
The good news? In most cases, you won’t. But there are some rules and exceptions to be aware of. This guide breaks it all down in simple terms, so you can buy and build with confidence.
When You Don’t Need Planning Permission?
Most polycarbonate greenhouses fall under what’s known as ‘permitted development’ meaning you can install one without applying for planning permission, as long as it meets a few basic rules.
Here’s a quick checklist:
a. The greenhouse is no taller than 2.5 metres (if within 2 metres of a boundary)
b. It’s placed in the rear garden, not the front
c. It doesn’t take up more than 50% of your total garden space
d. It’s used only for domestic gardening not for business
These conditions apply across most of the UK, including England, Scotland, and Wales. See our full range of polycarbonate greenhouses designed to meet these limits.
When Planning Permission May Be Needed?
There are a few exceptions that may require formal permission:
1. Front Gardens
If you’re planning to place your greenhouse in front of your house, planning permission will likely be needed even if the structure is small.
2. Listed Buildings
Live in a listed property? Any permanent structure added to your land needs consent from your local council.
3. Conservation Areas / AONBs
Properties in Areas of Outstanding Natural Beauty, national parks, or conservation areas often have stricter rules. It’s always best to double-check.
4. Oversized Greenhouses
If your greenhouse is especially large, or if it would take up more than half your garden, permission may be required.
Tip: Contact your local planning authority if you’re unsure every site has its own nuances.
Benefits of Staying Within Permitted Development
Why keep it simple? Because staying under the permitted limits means:
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No red tape or paperwork
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Faster installation
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No waiting for planning decisions
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Less cost and hassle
At Gradwell, we’ve designed our greenhouses to make this process easy. You can choose a model that’s safe, legal and stylish right out of the box.
How Gradwell Group Makes It Easy?
We’re not just selling greenhouses, we're helping UK gardeners grow more with less stress.
Our polycarbonate greenhouses:
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Are under 2.5m tall
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Come in a range of sizes from 6x4ft to 8x10ft
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Use lightweight aluminium frames
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Feature UV-protected twin-wall panels
And if you have questions about planning, dimensions or installation we’re always here to help. Contact us for free advice.
Quick Tips Before You Buy
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Measure your garden space before ordering
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Keep at least 2m away from your neighbour’s boundary
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If unsure, call your local council for guidance
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Choose DIY-friendly models to save on setup
FAQs
1. Can I build a greenhouse in my back garden?
Yes, as long as it meets height and footprint limits under permitted development.
2. Do I need permission if I live in a conservation area?
Possibly. Always check with your local authority, as stricter rules apply.
3. How tall can my greenhouse be without permission?
Up to 2.5 metres if it’s within 2 metres of a boundary.
4. What if my greenhouse is taller or larger than allowed?
You’ll need to submit a planning application through your local planning department.
5. Are Gradwell greenhouses compliant?
Yes. Our greenhouses are designed with UK planning laws in mind.
Final Thoughts
Adding a polycarbonate greenhouse to your garden shouldn’t be stressful and with the right guidance, it isn’t. In most UK gardens, you can install one without permission, as long as you stick to the basic rules.
At Gradwell Group Building Products, we offer a full range of legal, compliant and affordable greenhouses, built for British gardens and British weather. Whether you’re new to growing or a seasoned expert, we’re here to help you grow with ease.
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