29Details of fees and charges

#### 29 Details of fees and charges 29 Details of fees and charges > A contract must— > > > (a) if the certification work involves the determination of an application for a development certificate—require the fees and charges payable for the determination (excluding any fees and charges for work arising as a result of unforeseen contingencies) to be paid on or before the lodgment of the application, and > > > (b) if the certification work involves the carrying out of functions of a principal certifier—require the fees and charges payable for carrying out those functions in respect of particular development (excluding any fees and charges for work arising as a result of unforeseen contingencies) to be paid before the functions are carried out in respect of that development, and > > > (c) if the contract provides for payment of fees and charges for carrying out work arising as a result of unforeseen contingencies—provide for invoices to be issued within 21 days after the completion of that work.