Major projects undertaken by the Planning Division are primarily focused on improving slope safety. This necessitates a thorough understanding of the solid and superficial geology of Hong Kong as well as detailed knowledge of the physical and chemical processes active in the weathering environment. Accordingly, major projects also include basic research studies on aspects of geology and engineering geology which play a strategic role in improving slope safety.

The Planning Division is undertaking a feasibility study on long-term strategy for rock cavern development and provides technical advice on aspects related to rock cavern and underground space development.