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What permission is required to build a lean-to at the side of my house?

Whether a lean-to requires planning permission will depend on what the lean-to is used for, it may be an extension, pergola, carport, conservatory or gazebo.

In some cases a building a lean-to will be classified as permitted development, meaning an application for planning permission is not required provided specified limits and conditions are met. If these are exceeded, then you must apply for planning permission.

Permitted development rules vary based on the type of work you are completing, visit our Mini Guides for details on the specific rules.

If you live in a listed building, you will need listed building consent for any significant changes.

Common Questions

Is there a maximum height for a new dormer?

Yes, under permitted development, a new dormer must not be higher than the existing highest part of the roof. It should also have materials that are in similar appearance to the existing roof. Additional limits apply in conservation areas and on listed buildings. Read about planning permission for loft conversions on Planning Portal

What do I need to know if I want to add an internal wall to make another room in my house?

Adding an internal wall will not require planning permission or building control approval in most cases. If the building is listed, then you may require listed building consent to make a major alteration to the house.

Any work completed should adhere to building regulations, ensuring fire routes, electrics and ventilation are considered.

Can I replace my grass lawn with artificial grass?

In most cases neither planning permission nor building control approval are required for replacing grass with artificial grass. If you live in a protected areas such as a conservation area, or listed building, it is best practice to contact your local planning authority to check whether any consents are required.

 Find your local planning authority.

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What is the difference between a roof window and a dormer window?

A roof window (or skylight) is fitted flush within the slope of a roof, while a dormer projects outward, creating additional headroom and floor space.  

Both can be installed under permitted development but must meet specific size and position limits to qualify.  

Also consider building regulations for a new dormer, find out more on Planning Portal  

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Do I need planning permission to put new driveway access on an unclassified road?

Adding a new driveway to an unclassified road for access to a house or business falls under permitted development rights, meaning no application for planning permission is required.

If you live in a listed building, you will have to apply for listed building consent for any significant works, whether internal or external.

You will have to apply to the relevant highway authority for a dropped kerb if you wish to cross a pavement to access your property.

Read more information on our dropped kerb common project.

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