It is recommended to hire a professional joiner or builder who is familiar with UK Building Regulations to ensure compliance. Before proceeding with any staircase installation or renovation, it's crucial to consult with your local planning authority or a professional to understand the specific requirements for your property and project.
Loft conversions generally require planning permission, and the staircase would be included within this. However, some loft conversions fall under permitted development.
Yes, you can change the style of your staircase without planning permission as long as the work is internal and complies with Building Regulations.