While there is no defined expiry date for a BBA Agrément Certificate, continued validity is contingent on compliance with Certificate maintenance activities.  This includes 6 monthly factory surveillance visits and 3 yearly Reviews, which help to ensure that your factory production control and Certificate content remain valid, and are consistent with the original assessments. Changes to products or production should be notified to the BBA in advance of changes being made, and any non-conformities identified at surveillance visits will need to be addressed by the manufacturer. Non-conformities or required changes identified during the Review process will usually require either a Non-Technical or Technical Reissue of the Certificate to maintain validity.