article_snippet: And it's the type of building that costs a lot of money
article_snippet: Mr O'Leary said it was difficult to assess costs of the project and how they would pay off in future. '
article_snippet: There's no way to know if it's value for money without comparing it to other similar projects,' Mr O'Leary said. '
article_snippet: Mr O'Leary said cost blowouts were to be expected on any large project. '
article_snippet: Any billion dollar construction project is an extremely complex undertaking,' Mr O'Leary said. '
article_snippet: Original estimates and budgets tend to blow out because of the complexity.'