Those delays, trades contractors argue, also add costs to contracts because contingencies or hold-backs of five per cent or more have to be added to tender prices.
The highest median tender price received for the green restricted tender was $200,000 a hectare and the highest median unrestricted tender price was $192,500.
This required considerable acceleration work on the school building project costing some $300,000 extra above its $5 million original public tender price.