Lyttelton residents are worried the delay on the Timeball Station rebuild may cause the project to be abandoned altogether.
Work to restore the station has been postponed due to nearby road works which will block access until at least the end of the year.
Heritage New Zealand was set to start the rebuild this month but re-scheduled to avoid conflict with road works on Sumner Rd and Reserve Tce.
But Lyttelton Community Association president Ken Maynard said residents are worried that the delay may mean the restoration work is forgotten.
"If they put it on the back burner, we're worried the project is going to be dropped altogether."