How long does an application remain valid for?
Building Regulations applications remain valid for three years after the date of submission. Planning permission also remains valid for three years. If the applicant wants to start the proposed works more than three years have elapsed since the date of submission of the application, a new application is required and the works must comply with the standards that are current at the date of the subsequent application and not those current when the original application was submitted. Once works have started, there is no limit for completing the works. However, you should periodically update the local authority of the progress of works and contact them once the works are completed or occupied.