政府刊物介紹新完成私廈或屋苑之驗收程序及時間表

WWO46 - It is plumbing proposal in which the last part of it the licensed plumbing shall submit to WSD for completion of works and ask for WSD inspection. The certificate issued by WSD is pre-requisite for occupation permit.

FS501 - Submit to FSD when all FSI is completed. The certficate is pre-requisite for occupation permit.

BA13 is for New building works and OP shall be issued where BA14 is for completion of building works resulting NO new building.