In cases where someone intends to construct a building, he must obtain building permission from the local government concerned prior to the start of the construction work in accordance with the Building Standard Law (Japanese building code). And he must obtain a certificate of inspection upon completion of the construction work.
From May 2000, private organizations designated by the government are now allowed to grant building permission and carry out inspections as well as local governments.
CBL is one of these designated agencies, and carries out these services in Tokyo, Kanagawa, Chiba, Aichi, Kyoto, and Osaka etc. (26 prefectures) as of April 2016.
Since prefabricated houses are built in the same design and building equipment such as mass-produced elevators and water supply tanks are equipped in many buildings, it is not efficient for each agency to examine them to see whether they meet the Law. Therefore, the Law allows "Designated Approving Bodies" designated by the Minister to grant them "Specific-type Component Approvals" prior to the examination by each agency. In this case, examinations for the permission at each agency are simplified.
In addition, "Designated Approving Bodies" are allowed to grant "Certification of Specific-type Component Manufacturers" to manufacturers who supply prefabricated houses or building equipments mentioned above with the Specific-type Component Approval and through good quality management. In this case, inspections on the products supplied by them are simplified on the sites.
CBL is one of the "Designated Approving Bodies" and conducts these services.
The Building Standard Law sets forth building performance levels required for all buildings, and the ordinary specifications which meet the building performance levels required are stipulated in notifications by the Minister and others. Since the ordinary specifications are made for general construction methods and materials, some newly developed technologies may not be covered by their provisions. For this reason, the Law allows the Minister to review and approve the use of new methods and materials.
In such cases, CBL, as one of the "Designated Performance Evaluation Bodies" designated by the Minister, conducts the technical evaluation required prior to the Minister's approval.