Hi Livid.
NHBC do not check all properties on any one site they do random sample checks during construction.
These checks are only as good as the person doing them which makes you wonder how skilled these people are.
The NHBC are not an independant organisation they are funded by the building industry and therefore can be very bias towards their paymasters.
The rule of thumb here is not to trust that the NHBC will sort problems out anything with a satisfactory result for the punter who has paid the money your far better off with the direct action approach.
Cheers
Redrowsuffrer
Redrow Homes Defect Woes by redrowsufferer