Common gecko (Woodworthia maculatus).
Once thought to be widespread, recent genetic evidence has split this species into several distinct species. Until each species is formally described, all threat classifications remain out of date. This particular individual was photographed in the North Island, and so will most likely retain the species name maculatus. They are highly variable in pattern, even within species.
They are nocturnal, and so are seldom seen during the day unless disturbed.