The worst customer service in the world

[pjbtiler]

what do you my mortgage providers response would be if we told them?

[GKandR4CH]

Inform them what is going on and that you are paying a mortgage on a house that is worthess because of what is going on.
Remember it is their security.
I would also seek a copy of the sureveyors report as they passed off the house as ok. Surely they must have known about what was on the land to start with?

[NewHomeExpert]

This is a new house and a mortgages wouldnt have been given without a warranty.

This is so serious the NHBC must be informed today if you ahvent already told them.

You must continue with your mortgage. It is a loan and has nothing to do with the house. If it had burnt down you would still have to pay off the mortgage!

Is this a Taylor Wimpey house?
Everyone will blame everyone else with this. The Housebuilder the contractor, the contractor the engineer, the engineer the land surveyor. The NHBC will say as it is within two years the house builder should put it right but........... the NHBC should organise and supervise the remedy which I would think is demolition and rebuilding.