Container sellers often say you won't need planning permission because a container isn't fixed down. It isn't that simple. Whether you need permission depends on how big it is, how long it stays and what the land is used for. This guide covers the rules in England, with notes on the rest of the UK. It's general information, not legal advice, and your council has the final say.
The short version: a container stored at a rented yard is the yard's planning matter, not yours. A container on your own land may need permission, and the safest route is to ask the council before it arrives.
Why it can need permission
Planning permission is needed for "development". That means either building operations or a material change in the use of land. A container can trigger either one.
Is it a building? In planning law a "building" includes any structure or erection. Whether something counts comes down to size, permanence and physical attachment, weighed together. A heavy steel box that sits in place for years can count as a building even with no foundations. Nothing says a container is exempt because it's on sleepers or could be lifted out again.
Has the use changed? Even if the container isn't a building, it can change what the land is used for. A farmer's field with a run of containers let to outside customers has stopped being purely agricultural. It has gained a storage use, known as class B8, and that needs permission.
In a garden
Householders in England have permitted development rights for outbuildings under Class E. These can cover a container used for something incidental to the house, such as garden tools or bikes. The main limits are:
- Not forward of the wall forming the main front of the house.
- No more than 2.5 m high if it's within 2 m of the boundary. A standard container is about 2.59 m tall, so this rule often catches it.
- Elsewhere, no more than 3 m high with a flat roof, and eaves no higher than 2.5 m. The top edge of a standard container is above 2.5 m, so this rule can catch it as well. Some containers are lower, so measure yours.
- All outbuildings and extensions together must cover no more than 50% of the land around the original house.
- One storey only, with no raised platform, verandah or balcony.
The rights are tighter or absent in several cases:
- In a listed building's grounds, there are no Class E rights.
- In National Parks, National Landscapes (AONBs), the Broads and World Heritage Sites, anything more than 20 m from the house is limited to 10 sq m in total. A 10ft container is about 6.5 sq m and a 20ft is about 14 sq m.
- In conservation areas, nothing can go between the side of the house and the boundary.
- Flats have no Class E rights.
- Some councils have removed the rights with an Article 4 direction, and some planning conditions take them away.
The rights only cover uses incidental to the house. Bedrooms, kitchens and other main living accommodation aren't included, and a container used for a business may not be incidental at all.
On a farm
Agricultural permitted development rights apply to buildings reasonably necessary for farming. On a unit of 5 hectares or more, the farmer normally has to ask the council first whether prior approval is needed. But those rights are for buildings designed for agriculture. The South Downs National Park's farmers' guide lists lorry containers among the structures that need full planning permission.
Letting containers to the public is a separate matter. It's a new business use and needs its own permission, even on a working farm. If you're setting one up, our yard checklist shows what tenants will ask you.
On a construction site
Temporary buildings and moveable structures needed for building works can usually go on the site, or on land next to it, for as long as the works last. They have to be removed when the job ends, and the land has to be put back. This is why site containers rarely need their own permission.
On business premises
If your site already has a storage or industrial use, a container may fit that use, but it can still count as a building. Check your existing permission for conditions on outside storage, and for limits on height or the number of structures. Landlords and leases may have their own rules too.
The 28-day myth
You'll hear that anything on site for under 28 days is fine. There is a permitted right for temporary use of open land for up to 28 days a year, but it's limited and it's about the land's use. It won't help with a container that stays for months.
What can happen if you get it wrong
Having no permission isn't a crime in itself, but a council can serve an enforcement notice telling you to remove the container, and ignoring that notice is an offence. In England, the limit for enforcement is now 10 years for breaches from 25 April 2024. Wales keeps a shorter four-year period for building works. Scotland and Northern Ireland have their own systems, so check with your planning authority there.
How to check before you buy
- Ask the planning department. Many offer pre-application advice, sometimes for a fee.
- Apply for a Lawful Development Certificate if you believe it's allowed. It's formal proof that a proposal is lawful, and useful when you sell.
- Check your deeds, lease and any planning conditions.
- Talk to the neighbours. Most enforcement starts with a complaint.
Or avoid the question
Renting a container on an existing yard means the planning is the operator's concern. You also skip delivery and crane costs, and you can leave on a month's notice. See container storage near you, what it costs, or browse all container storage, including Birmingham, Leeds and Bristol. Need a size? See container sizes.
Common questions
Can I put a shipping container in my garden without planning permission?
Sometimes. It may fall under Class E permitted development if it's for use incidental to the house and meets the size and position limits, but a standard container's height often breaks them. Check with your council first.
Do I need planning permission for a shipping container on agricultural land?
Often yes. Agricultural rights are for buildings designed for farming, and containers generally aren't. Using one to let storage to outsiders is a change of use and needs permission.
Does a container count as a building if it isn't fixed down?
It can. Size, permanence and physical attachment are weighed together, so a container left in place long term can count even with no foundations.
How long can a shipping container stay on land without permission?
There's no simple safe period. The 28-day right covers temporary use of open land and won't cover a container left for months. In England, enforcement can be taken for up to 10 years.
Do I need permission to rent a container at a storage yard?
No. The yard deals with its own planning. You just rent the container.
