The Bradken foundry in central Dunedin has been sold, after two years on the market.

It's not clear whether all five of the company's titles behind the Dunedin Railway Station have been sold, or to whom.

Property agents are keeping tight-lipped about the deal, saying the owner must give permission for public comment.

Bradken's Australian headquarters has previously refused to comment about the premises and its local operations.

It listed the Tewsley Street complex in early 2013 after leasing the Hillside workshops foundry for five years.

The company's industrial site had a collective capital value of $1.7m around that time.