Planning permission and building regulations do change, which is why we don't have extensive lengths of text on either. We do, however, have links to the various pages in which you can familiarise yourself on the topic you have a question about.
Getting in touch with your local authority before carrying out any alterations externally on the property or structural would be our advice.
Permitted development rights allows homeowners to make changes to their property without the need for planning applications and the fees that come with them. Building regulations are usually required when making alterations. There are circumstances where certain additions/alterations can be undertaken without building regulations.
There are a number of mini-guides regarding what you can and can't do with your property outside of a planning application (click the links in the menu for each guide).