Do you need permission for a metal shed in the UK?
A metal shed is a practical and durable solution for those looking for extra space in their garden. However, before you build one, it is important to understand whether you need planning permission, especially in the UK, where regulations can vary. In this article, we provide key information on the legal requirements for a metal shed and practical tips for investors.
What is a metal shed?
A metal shed is a lightweight, prefabricated garden structure, usually made of galvanised steel or aluminium, designed for outdoor use. It serves as a practical storage space for tools, gardening equipment, bicycles, seasonal furniture and recreational accessories. It is also increasingly used as a workshop, mini-storage room, or even a place to relax or work remotely.
These types of houses are distinguished by several important features:
- durability and resistance – steel or aluminium structures are highly resistant to corrosion, moisture, fungi and pests, making them an ideal choice for many years.
- maintenance-free – unlike wooden sheds, they do not require regular maintenance, painting or impregnation.
- ease of assembly – most models are available in DIY kits, without the need to hire professionals.
- modern aesthetics – available in various colours, finishes (e.g. wood-like) and styles, they easily fit into various garden designs and the architecture of modern properties.
When does a metal shed require a building permit?
The requirements for building permits for metal sheds vary depending on the country, region and the specific nature of the planned structure. Below is detailed information for the United Kingdom. It is worth remembering that even a small change, such as adding an installation or increasing the height, may affect the need to obtain a permit. Therefore, it is always a good idea to consult your local authority or a planning specialist before starting construction.If you want to find out more details on this topic we encourage you to read our article ‘Planning permission for a Garden Room – Complete guide’
United Kingdom: Do you need a permit for a metal shed?
In the United Kingdom, many garden sheds, including metal ones, can be erected without planning permission thanks to ‘permitted development rights’.
When is planning permission not required?
Planning permission is not required if:
- purpose: the shed is used exclusively for domestic purposes, e.g. as a tool shed,
- location: the shed is not located in front of the main façade of a residential building,
- height: does not exceed 2.5 m if located less than 2 m from the property boundary,
- building area: does not exceed 15 m² (or 30 m² if located more than 2 m from the plot boundary),
- no installations: the shed has no water, sewage or heating installations.
When is a permit required?
A building permit is required if:
- intended use: the shed is to be used as a place of residence or has sanitary facilities,
- dimensions: the shed exceeds the permissible dimensions specified in the regulations,
- location: the shed is to be erected in an area subject to conservation or other restrictions.
It is recommended that you consult your local planning authority before starting construction.
Interesting fact: In the United Kingdom, although many garden sheds can be built without a permit, there are cases where owners have had to dismantle their structures due to regulatory violations. For example, in 2025, a couple from Inverclyde were ordered to demolish their £20,000 garden shed because it was built too close to the boundary of their property and without the proper permission. Although there were no complaints from neighbours, the local authorities deemed the construction to be non-compliant with regulations. This shows how important it is to familiarise yourself with local regulations before starting construction.
What to avoid? The most common mistakes when erecting a metal shed
Although a metal house is often associated with a simple design, its ill-considered construction can lead to serious formal problems and costly consequences. Here are the most common mistakes – and those that are worth avoiding:
1. Failure to consult the authorities
Many investors assume that since the shed is ‘small and portable’, it does not require any formalities. However, local regulations in the United Kingdom may require you to report the construction or obtain a permit, even for sheds with an area of less than 10 m².
2. Placing the shed too close to the fence
Many regions have regulations regarding minimum distances from property boundaries, e.g. 2 metres in the UK. Placing a shed too close to a fence may be considered a violation of neighbourhood law, especially if the shed casts a shadow on a neighbouring property or prevents the free use of the land.
3. Installing water supply without notification
Adding water, sewage or electrical installations to a garden shed often automatically changes its classification from ancillary to utility, which in many cases requires planning permission. In the UK, this may also mean that insulation, drainage and access for emergency services requirements must be met.
4. Ignoring the zoning plan
In the United Kingdom, there are Local Development Frameworks that specify how a given area can be used. A shed built on agricultural, protected or planned land may be considered unauthorised construction.
5. Lack of photographic documentation and design
In the event of a dispute with a neighbour or the authorities, or if you need to sell the property, it is a good idea to have technical documentation of the shed and photos of its assembly to hand. These allow you to prove compliance with regulations and are often required for formal notifications.
The above deviations from the law may result in a fine, a penalty notice or the need to dismantle or move the structure.
MAFAL – a new quality of metal houses
Our offer includes the MAFAL product line, which represents a new quality in the design of metal houses. We create durable, aesthetic and fully customised structures – exactly what modern users expect. Each of our houses can be tailored to individual needs: we offer various dimensions, door and window layouts, colours from the RAL palette and wood-like finishes, such as walnut or golden oak. You can also choose PVC glazed doors and windows – classic or mirrored – which provide both light and privacy.
Importantly, our structures are designed to comply with the legal requirements of individual markets. This means that a MAFAL metal shed can be designed so that it does not require a building permit, both according to German and UK regulations. We also provide support in selecting a model that is suitable for local restrictions on dimensions, height or location of the building on the plot.
Our tool sheds are not only functional and durable, but also feature a modern design and the possibility of customising every detail, from the colour to the type of glazing. This makes them a coherent part of the garden architecture, rather than just a typical utility building.
Summary
Building a metal shed can be a simple and effective way to increase the usable space in your garden. However, before starting work, it is important to familiarise yourself with local building regulations to avoid potential legal problems. It is always advisable to consult the relevant authorities and plan your investment carefully.
FAQ
Does a metal shed have to be anchored to the ground?
Anchoring is recommended – it ensures stability and wind resistance. In some regions, it may even be required by law.
Can a shed be placed on the boundary of the plot?
Usually, a minimum distance of 2 metres from the boundary applies. Exceptions depend on local regulations and the consent of neighbours.
Can I assemble a metal house myself?
Yes – most models, including our MAFAL models, are self-assembly kits. For larger structures, it is worth considering the help of a professional.
