Christchurch's new stadium Te Kaha could be facing a budget blow-out.
It comes just weeks before the lead contractor is expected to submit its final bid for the project, which will outline the final price tag.
In August last year, councillors decided to increase the project budget by $50 million to ensure it could be built with 30,000 seats.
Citizens and community general manager Mary Richardson says the council is aware of the potential for cost escalation.