If your property has permitted development rights, you can proceed with a Mansard conversion under a Certificate of A piggyback conversion always requires planning permission before work can begin, as raising the ridge falls outside the guidelines for a Certificate of Lawfulness. At The Loft Room, we will handle the submission of all necessary applications on your behalf to ensure the correct approvals are obtained.Lawfulness. This means you can begin work without waiting for approval, as long as you stay within the council's guidelines.

If you don't have permitted development rights, you'll need to apply for planning permission before starting any work. Once your planning application is validated, the council typically makes a decision within eight weeks.

At The Loft Room, we will determine the required permissions and handle all the necessary applications on your behalf to ensure the correct approvals are obtained.