15Restrictions concerning cost escalation clauses

15 Restrictions concerning cost escalation clauses (1) In this section a ***cost escalation clause*** means a provision in a contract under which the contract price may be increased to reflect increased costs of labour or materials or increased costs caused by delays in carrying out the work to be carried out under the contract, but does not include a provision that enables the contract price to increase to reflect— (a) unforeseeable cost increases resulting from changes to government taxes or charges[[6]](#endnote-7); or (b) prime cost items or provisional sums. (2) A builder must not enter into a domestic building contract that contains a cost escalation clause unless— (a) the contract price is more than $500 000 (or any higher amount fixed by the regulations); or (b) the clause is in a form approved by the Director and complies with any relevant requirements set out in the regulations. (3) A cost escalation clause in a domestic building contract is void unless— (a) before the contract was entered into, the builder gave the building owner a notice in a form approved by the Director explaining the effect of the clause; and (b) the building owner places her, his or its signature or seal or initials next to the clause.