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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Adding air conditioning to your home may be considered permitted development provided all the limits and conditions set out in legislation are met. The limits set out the function, size, placement and quantity of air conditioning units allowed.

The rights only apply if the system provides a heating function (including if it can provide both heating and cooling). If the system only offers a cooling function, then the rights do not apply and an application for planning permission will be required.

If your home is in a protected area such as a Conservation Area then permission will be required. If you live in a listed building then consent will be required.

The installation of air conditioning must comply with building regulations. It is advisable to contact an installer who can provide the necessary advice, preferably one who belongs to either the Microgeneration Certification Scheme or the relevant Competent Person Scheme.

For more information on air conditioning, read our heat pumps common project.

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Planning permission is not required to move an internal doorway, provided it does not impact the external appearance of the building. If the building is listed, you will require listed building consent for any changes to the building.

Building regulations may apply if the wall is load bearing or is part of a fire escape route.

Read more about windows and doors from our common projects.

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You will often not require planning permission to fit a log burner. If you are adding a new external flue or chimney then different rules will apply.

If you live in a listed building you will require listed building consent.

The installation of a log burner must comply with building regulations. It is recommended that you use a HETAS-registered installer who can certify the work. Visit the HETAS website to search for an installer.

Read more information around fitting an external flue or chimney in our common projects section.

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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.