Abertawe Sectional Buildings Ltd

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Do You Need Planning Permission For A Sectional Garage

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  • 21-09-2021
Do You Need Planning Permission For A Sectional Garage

Do you need planning permission for a sectional garage? This is an important question to consider if you are thinking of adding an outdoor building to your home or business.

Planning Permission Guide for Concrete Garages

Sectional garages, workshops, sheds and other garden buildings are considered permitted development. They do not require planning permission as long as they are within the following guidelines:

No outbuildings are allowed forward of the walls that form the principal elevation.

Garages and Outbuildings must be single-storey with a 2.5 metres maximum eaves height and a 4m maximum overall height for dual pitched roofs or 3m for any other type of roof.

2.5m maximum height for enclosures, containers or buildings within 2m of a house or dwelling's curtilage.

No raised platforms, balconies or verandas.

Anything under 50% of the original house's surrounding land area is allowed to be covered by additions or other buildings.

Why Do We Need Building Regulations?

Building regulations are important for several reasons. Firstly, they create a basic guideline for design and building standards for domestic, industrial and commercial construction.

They set the boundary for what is considered building work, which allows builders to identify what rules they need to follow according to the building or area's type.

Building regulations ensure building work is safe for both the owner of the building and those around them, such as neighbours. It also exists to ensure proper disabled access and facilities and to conserve precious land and listed buildings.

Do You Need Planning Permission For A Sectional Garage?

Garage Planning Permission

In most cases, planning permission is not needed for concrete garages as they are temporary structures by definition. As long as the ridge height is lower than 2.5m, no planning consent is needed.

In some cases, such as if the building covered over 50% of the property, planning permission would likely be necessary.

Other reasons include the added building containing a raised platform or having multiple storeys. For any building questions or concerns you might have, you can contact your local planning authority.

You can always ask the relevant planning authorities if you are unsure whether your additions require permission, as it's better to know earlier on.

They can offer free advice to better your knowledge about the limits of your projects, so you don't end up wasting time with jobs that you don't have the correct permissions for.

Local authorities can inform you of useful guidelines regarding buildings intricacies such as detached renovations, complicated floor area planning and required door space.



If your garage surpasses 4 metres (13.12 feet) in height, you will need planning permission.

You will also need planning permission if your garage is multiple storeys high and surpasses the 2.5 metres maximum eaves height.

You won't need permission if the overall height is below 4 metres if using a dual pitched roof or 3 metres if using any other type of roof.


As garages are permitted development by definition, you can build one without requiring any form of planning permission.

However, you must stay within the size limits.

The garage cannot take up over half the area of the land around the original house, and there are other regulations regarding height you must adhere to also.


Many homeowners choose to convert their existing garage instead of building one from scratch.

As long as you aren't increasing the size of the garage and all of the work involved is internal, you won't require planning permission for your garage conversion.

Some housing estate properties have a condition where the garage must be kept as a parking space, so be sure to check with the relevant local authority before starting work.


Provided your building plans don't surpass any of the limits of the permitted development guidelines, you will not require planning permission for your concrete sectional garage.

If you plan on adding a garage with multiple storeys, or any form of raised platform, you will require planning permission to do so.

Additionally, if your new building will take up over 50% of the original house's surrounding land area, you will need planning permission for that too.


You will likely surpass the 4m reasonable height limit by building another room above your garage.

In most cases, you will need planning permission to do so.

If you plan to add a raised platform, balcony, or veranda, you will need permission for that too.



You won't need planning permission to extend your garage, provided the extension won't raise the garage's height beyond 4m (13ft).

If you need to extend your garage higher than what's considered a reasonable height, or if the garage extension will cover over half of the surrounding land around the property, you will need planning permission.


Despite most double garages being significantly bigger than regular garages, they might not exceed the 4m reasonable height limit, so planning permission may not be required.

However, planning permission is required if the garage is large enough to take up over half of the surrounding land around your property.


Most of the time, you will not need planning permission if you want to demolish your garage.

However, if the property has an article 4 direction on it from the council, you would need permission.

Fortunately, you would likely already know if your property was affected by the article 4 direction, as they are commonly used for properties in conservation areas, and you would have likely been told about it beforehand.

If you are unsure about whether you need permission or not, you can check with your local authorities.

They can inform you about any outbuilding requirements that may affect your property, and you can avoid getting into any potential trouble down the line.


As log cabins and wooden garages are typically considered temporary structures, no matter how long you intend to keep them in one place, you won't need any form of planning permission.

The same applies to kit garages or ready-made wooden garages. Just remember you will need permission if you have any of the following.

Multiple stories

Raised platforms

A building height that exceeds 4m

If you're looking for sectional garages around the Swansea area, then you've come to the right place. We provide a wide variety of styles and designs to choose from, and we have years of experience in the industry.