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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.
Your gas meter should only be moved by your energy supplier or your local gas network operator. For more information contact your energy supplier to understand if they can move it based on your requirements.
Full details on gas safety and planning can be found on our utilities common project.
Widening or creating a new external doorway will likely fall under permitted development rights, meaning an application for planning permission is not required provided you meet limits and conditions set out in legislation. If the change is on the side or rear of the building it is more likely to comply with planning regulations.
If you live in a listed building, you will have to apply for listed building consent for any significant works, whether internal or external.
New external doorways which create a new or widened opening must comply with building regulations as they may impact the structure of a building.
Whether raising the height of an external door requires planning permission depends on the location of the door, location of the property and how drastic the height change will be.
For smaller changes to the side and rear of the property, permitted development rights may apply, meaning no application or planning permission is required.
Where the height change will be substantial and have a significant impact on the building’s appearance, planning permission is likely to be required. Especially in cases where the door to be heightened is on the principal elevation of the property.
Principle elevation - The most visible or prominent side of a structure, typically facing a street or public area. While often considered the 'front' of the building, it may not always contain the main entrance.
In designated areas such as conservation areas, or on listed buildings you may require additional approvals such as listed building consent.
If you believe permitted development rights apply to a small change, you can apply for a lawful development certificate to ensure this is the case.
Building regulations approval will likely be required where the change impacts the structure of a building, this primarily occurs when an opening is widened. When altering walls you may want to consult a structural engineer.
An application for full planning permission for a change of use is often required when changing from a house (use class C3) to a residential institution (use class C2). This is due to the increased activity which a C2 use would have on the local street area through the addition of visitors, staff and changes to parking.
Read additional information on use classes and changes of use.
The failure to obtain planning permission or comply with the details of a permission is commonly known as a 'planning breach'.
A planning breach usually occurs when:
If the breach involves a previously rejected development (or the retrospective application fails) the council can issue an enforcement notice requiring you to put things back as they were.
There are statutory time limits for enforcement, these vary based on when the breach took place.
There is no time limit for enforcement on breaches of planning control relating to relevant demolition.
For any other breach of planning control, ten years beginning with the date of the breach. This predominantly applies to changes of use.
Read more about breaches of planning control and lawful development certificates on Planning Portal.