Article 4 Directions are fairly rare and exist in parts of some conservation areas. They are used as a way of protecting the character and appearance of some areas where there is a particular historical or cultural significance.
An article 4 direction limits the works that can be carried out under Permitted Development and if you live in an area where there is an article 4 in place you probably already know about it! You can check by visiting your local council website or calling the planning department.
Article 4’s often only apply to basement conversions or converting your house to an HMO (House of Multiple Occupation) and if an Article 4 is in place, it may mean that you need to apply for planning permission to fit solar. If so, we’d recommend contacting a planning consultant or architect as the application is likely to be sensitive and they will give you the best chance of success.