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Do I need permission to demolish an old lean-to and rebuild to the same measurements?
Demolishing and building a new lean-to will still have comply with planning requirements.
If you live in a conservation area or listed building you may require approval for the demolition.
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 interactive house 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
Raising your garden level a small amount is likely to not require planning permission as it is likely to have minimal impact on the chances of flooding or overlooking your neighbours.
Increases of over 30cm may require planning permission as a significant change can impact drainage or your neighbours. If the changes are close to a boundary, you should consider whether it will overlook your neighbours or be intrusive.
You should contact your local planning authority to understand whether your proposed changes will require planning permission.
Work to the roof of a house (e.g. re-roofing) that does not change its external appearance will usually not require an application planning permission as it is classed as ‘permitted development’. There are certain conditions and limits that need to be met to qualify for permitted development rights.
Read more about permitted development for work to a roof.
A new roof must comply with building regulations to ensure it is structurally safe, energy efficient and properly ventilated.
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
You will not need to apply for planning permission if you wish to erect a new; or alter, maintain, improve or take down* an existing fence, wall or gate if certain conditions are met. If any of the conditions are not met, then you will need to apply for planning permission.
Find out about the limits and conditions for fences, gates and walls.
Fences, walls and gates do not require building regulation approval. Even though building regulations do not apply, the structures must be structurally sound and maintained.
If you share a wall with a neighbour, it may be classed as a ‘party fence wall’.
Merging two flats into one, commonly known as amalgamation is likely to require planning permission as it will impact the local planning authorities housing supply. The council’s views on this will vary from council to council. It is recommended that you contact your local planning authority to understand their position.
If you do not need to apply for planning permission then you can apply for a lawful development certificate to prove that the change is lawful.
Building regulations will be required if there are physical works taking place as part of the amalgamation, this may include removing walls or changing electrics. Visit the relevant common projects on our site for more information.
