It is always important to consider applying for permission from your local authority if you are planning an expansion or modification of your premises. Without doing so you could face having to remove/revert any changes you make at your own cost.
The government website has a great resource for information and provides an online application service.
What is planning permission?
Seeking permission for a certain piece of building work falls under the responsibility of your local authority. They can grant or refuse your plans so it's important you research your case thoroughly and supply them with every reason to grant your request.
Some development is permitted without making an application. These restrictions should be researched before you carry out the work no matter how small.
Here is your ‘Permitted Development Rights’ that can be found on the Planning Portal website.
Permitted Development Rights
You can make certain types of minor changes without needing to apply for planning permission. These are called "permitted development rights" and are described in this guide.
They derive from a general planning permission granted not by the local authority but by Parliament.
In some areas of the country, known generally as 'designated areas', permitted development rights are more restricted.
If you live in a Conservation Area, a National Park, an Area of Outstanding Natural Beauty or the Norfolk or Suffolk Broads, you will need to apply for planning permission for certain types of work which do not need an application in other areas.
There are also different requirements if the property is a listed building.
The Planning Portal's general advice is that you should contact your local planning authority and discuss your proposal before any work begins.
They will be able to inform you of any reason why the development may not be permitted and if you need to apply for planning permission for all or part of the work.
Permitted Development Rights withdrew
You should also note that the local planning authority may have removed some of your permitted development rights by issuing an Article 4 direction. This will mean that you have to submit a planning application for work which normally does not need one.
Article 4 directions are made when the character of an area of acknowledged importance would be threatened. They are most common in conservation areas.
You will probably know if your property is affected by such a direction, but you can check with the local planning authority if you are not sure.
