Other restrictions that you need to check before building a porch
When starting any building project, you should always check with your local planning office to make sure that you're within permitted development rights and that there aren't any local regulations that apply:
Change of use
If you have a house that was created by the permitted development rights change of use or a converted house, then you might be subject to planning permission.
Article 4 Direction
Local authorities may have an article 4 direction that gives them the right to withdraw usual permitted development rights.
Listed buildings are subject to much tighter permitted development rights than other properties. Before you add a porch, you'll need listed building consent.
Designated areas, such as Conservation Areas, National Parks, Areas of Outstanding Natural Beauty and World Heritage Sites also have more restricted rights for development. As with listed buildings, you'll need to gain approval from the relevant authority for your porch.
A previous owner of your property might have added a restrictive covenant to your house that could stop you from any development or building work on the house or land. When you bought the property, it was up to your conveyancing solicitor to tell you about any covenants. If in doubt, check with your solicitor.
Information is correct at time of publication: Updated June 2021.
Planning rules are subject to change. Always seek approval from your local planning authority before starting any building work.