Whether you need building regulations approval or not, check if you also need planning permission.
Full plans application
A full plans applications is required for more complex domestic building work, alterations and for any commercial premises.
You'll be required to submit detailed drawings, including floor layouts, cross sections and details of construction methods and materials.
Structural calculations may also be required if the work includes structural changes such as loft conversions, removing load bearing walls and the creation of openings.
Make a full plans application
You can apply and pay for a full plans application online.