Opinions please.

[skyhuck]

like others have said it would be the conifers if anything, they would be drawing more water than the oak since they are sweating all year.

 

.

 

I bet they haven't been sweating for the last month

[Jellystock]

Wouldn't make any difference, building regs would stipulate footings to accommodate the subsidence potential...........

 

As I have already said investigation pits and plasticity test, is the only way to be certain, those conifers would be first on my list of culprits........

 

I agree, the footings on my extension are way deeper and thicker than on the original house.

I was just pointing out the unfounded assumptions.