请教各位大佬，homebuyer report中提到sub soil is predominantly of clay，之后评价可能长时间干燥天气会对房子有影响，不过上网到处搜了一下，这种粘土问题无解（貌似也不是很严重问题？在英国能有多长连续干燥的天气…）？
另外还提到I believe the property is connected to the public sewer. There is a pump system located within the outside meter cupboard above the drain cover.
Where accessible (in the meter cupboard) the foul drain was blocked. Further investigation and appropriate repair is required.
这个对房子影响大吗？应该要卖家解决或者讲价？然后要什么样的repair？找什么人来做呢？大概费用怎样？
多谢多谢！