Whitcoulls' flagship store in one of Queen St's landmark heritage buildings is undergoing a $3 million makeover.
The company said its aim was to make it the best book and stationery shop in the Southern Hemisphere.
Work is underway within the 129-year-old building, which will remain open throughout the renovations.
Whitcoulls' managing director, Ian Draper, said the plan was to have the majority of the work complete by the end of October in time for the busy Christmas period.
The interior plan of the 2000sq m store will remain much the same, after a change to the layout late last year.