大家好。我们最近相中的一套房子，Solicitor请专业机构评估后的RiskView报告显示：在距离该房10米处的地段（一大片草坪）存在级别为中等级别的风险。具体如下。请教各位这个问题是否常见？是否需要请专业机构去调查一下？
Natural Ground Stability Hazards：
Information from the BGS indicates that the ground in the area is prone to changing shape or volume, usually
because of varying amounts of water in the ground thorughout the year. This means that there is a moderate
potential that problems could occur in the area.
Hazard Potential: Moderate
Hazard Description: Ground conditions predominantly high plasticity.
Hazard Guidance: Do not plant or remove trees or shrubs near to buildings without
expert advice about their effect and management.