You'll probably need planning permission if you want to
- build something new
- make a major change, like build an extension
- change the use of your building
What other issues do I need to consider when applying for planning permission?
We strongly advise you to consider the following issues:
- Contaminated land
- Sustainable development
- Protected species
- Recycling and Waste
- Flood Risk
- Listed building advice
What if I don’t have planning permission?
If you go ahead without permission or approval, you may have to put things back to how they were.
However, you can apply retrospectively, in the same way that you would if you were applying for planning permission before carrying out any work.
There is a period of time where a development or use becomes exempt from prosecution. In these cases you apply for a Certificate of Legal Use after the period has expired. Contact the planning enforcement team for advice on whether an exempt ruling applies to your building works.
If the development or use has existed for either 4 or 10 years, it becomes exempt from prosecution and you can apply for a Certificate of Legal Use. Contact the planning enforcement team for advice on whether the 4 or 10-year rule applies to your building works.
If a development remains unauthorised, we will try to resolve the matter through negotiation. If that is unsuccessful, we may take legal action.
See our planning enforcement powers leaflet for further information.
Design advice leaflets and guidance notes
We have a wide range of specialist leaflets aimed at helping applicants and developers, such as ‘Listed Buildings’ or ‘Conversion of Traditional Farm Buildings’. Most are free to download or view online.