Mondelez last month confirmed its plan to close the factory early next year, with the loss of about 360 jobs.
Cadbury World was to remain open in the redeveloped Dairy Building, but there was speculation about what would happen with the rest of the site.
Dunedin Mayor Dave Cull, who previously declined to rule out a council purchase of the property, said yesterday he was not aware of any approach by the council or its representatives.
Despite that, the interest in the site from agents was ''encouraging'', he said.
Dean Collins, the associate director of Colliers International in Dunedin, confirmed the company had contacted Mondelez.
His company had a list of potential clients looking for property in Dunedin, and ''we would certainly have people to talk to'' about the Cadbury site.
His company was waiting to hear how Mondelez planned to progress any sale.
''We've certainly touched base but there's certainly been no progress.''
Cutlers principal John Cutler said some of the approaches could be agents ''stalking'' the sellers in the hope of acting for them.
''It's common practice to follow them up and be in the loop ... It just means they could be just talking to them about hopefully getting it to sell later on.''
Mr Kane said Mondelez recognised the site was a ''significant landmark'' in Dunedin, ''and we are hopeful of finding a buyer that will use it in a way that benefits the local community''.
It was not yet clear when the formal process to sell the remainder of the site would begin.