Building Permits (Persetujuan Bangunan Gedung or PBG) and Usage Worthiness Certificates (Sertifikat Laik Fungsi or SLF) are required for the construction and occupation of buildings in Indonesia. The PBG is necessary for construction, renovation, or expansion, ensuring compliance with building codes and zoning regulations. The SLF is issued after construction is complete, certifying that the building is safe and suitable for use.