By 1995 regular monitoring of the building and surrounding area by Waihi Gold Mining Company showed that the pumphouse was slowly tilting, and that the ground on which it was built was also moving.
By the beginning of 2005 it was obvious that the pumphouse was tilting dangerously and the ground on which it sat was continuing to move. Experts advised that if it was to be saved the building itself would have to be moved.