Just wondering if anyone could give me any idea of how much it will cost to put some conservatory foundations right?
The conservatory is 4m x 5m approx and a surveyor has recently advised that not only are the foundations insufficient for a "normal" build as we have drains running under the conservatory that these should have been protected by putting foundations to 450mm below the drains. I've been trying to investigate repairing foundations on the internet and it looks like a trench could be dug around the perimeter to do this. The only problem is, that one of the sides is next door to our neighbour's extension so a trench can't be dug on this one side. Does anyone know what would happen here? And also, does the entire drain need to be encased? If it does, does that mean that the base will have to be dug up?
Any advice would be greatly appreciated.